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Sloth

Many web applications store persistent data in databases. During execution, such applications spend a significant amount of time communicating with the database for retrieval and storing of persistent data over the network. These network round-trips represent a significant fraction of the overall execution time for many applications (especially... (more)

Synchronization of Queries and Views Upon Schema Evolutions

One of the problems arising upon the evolution of a database schema is that some queries and views defined on the previous schema version might no... (more)

Capturing Missing Tuples and Missing Values

Databases in real life are often neither entirely closed-world nor entirely open-world. Databases in an enterprise are typically partially closed, in which a part of the data is constrained by master data that contains complete information about the enterprise in certain aspects. It has been shown that, despite missing tuples, such a database may... (more)

Plan Bouquets

Identifying efficient execution plans for declarative OLAP queries typically entails estimation of several predicate selectivities. In practice, these estimates often differ significantly from the values actually encountered during query execution, leading to poor plan choices and grossly inflated response times. We propose here a conceptually new... (more)

Random Walk with Restart on Large Graphs Using Block Elimination

Given a large graph, how can we calculate the relevance between nodes fast and accurately? Random walk with restart (RWR) provides a good measure for... (more)

The Exact Complexity of the First-Order Logic Definability Problem

We study the definability problem for first-order logic, denoted by FO-Def. The input of FO-Def is a relational database instance I and a relation R;... (more)

The Complexity of Learning Tree Patterns from Example Graphs

This article investigates the problem of learning tree patterns that return nodes with a given set of labels, from example graphs provided by the... (more)

NEWS

Changes to the TODS Editorial Board

As of January 1, 2016, five Associate Editors, Wenfei Fan, Chris Jermaine, Tova Milo, Lucian Popa, and Divesh Srivastava, ended their terms, having served on the editorial board for six, or between six and seven, years. In addition, they will stay on until they complete their current loads. We are fortunate that they have donated their time and world-class expertise during these years. Also five new Associate Editors have joined the editorial board: Marcelo Arenas, Gao Cong, Torsten Grust, Peter Haas, and Wim Martens.

Please read more here.

New options for ACM authors to manage rights and permissions for their work

ACM introduces a new publishing license agreement, an updated copyright transfer agreement, and a new author-pays option which allows for perpetual open access through the ACM Digital Library. For more information, visit the ACM Author Rights webpage.

 

New TODS EiC Appointed 

The ACM Publications Board has appointed Christian S. Jensen as the seventh Editor-in-Chief of ACM TODS, as of this date. Christian replaces Z. Meral Özsoyoglu, who provided six years and eight months of excellent stewardship as TODS Editor-in-Chief. In addition to his many other accomplishments, Christian is an experienced TODS editor having previously served for six years as an Associate Editor (8/1/2001 to 7/31/2007).

Forthcoming Articles
Private and Scalable Execution of SQL Aggregates on a Secure Decentralized Architecture

Current applications, from complex sensor systems (e.g. quantified self) to online e-markets acquire vast quantities of personal information which usually end-up on central servers where they are exposed to prying eyes. Conversely, decentralized architectures helping individuals keep full control of their data, complexify global treatments and queries, impeding the development of innovative services. This paper precisely aims at reconciling individual's privacy on one side and global benefits for the community and business perspectives on the other side. It promotes the idea of pushing the security to secure hardware devices controlling the data at the place of their acquisition. Thanks to these tangible physical elements of trust, secure distributed querying protocols can reestablish the capacity to perform global computations, such as SQL aggregates, without revealing any sensitive information to central servers. This paper studies the subset of SQL queries without external joins and shows how to secure their execution in the presence of honest-but-curious attackers. It also discusses how the resulting querying protocols can be integrated in a concrete decentralized architecture. Cost models and experiments on SQL/AA, our distributed prototype running on real tamper-resistant hardware, demonstrate that this approach can scale to nationwide applications.

Bounded Repairability for Regular Tree Languages

We study the problem of bounded reparability of a given restriction tree language R into a target tree language T. More precisely, we say that R is bounded repairable w.r.t. T if there exists a bound on the number of standard tree editing operations necessary to apply to any tree in R in order to obtain a tree in T. We consider a number of possible specifications for the tree langauges: bottom-up tree automata (on curry encoding of unranked tree) that capture the class of XML Schemas and DTDs. We also consider a special case when the restriction language R is universal, i.e., contains all trees over a given alphabet. We give an effective characterization of bounded repairability between pairs of tree languages represented with automata. This characterization introduces two novel tools, synopsis trees and a coverage relation between them, allowing one to reason about tree languages that undergo a bounded number of editing operation. We then employ this characterization to provide upper bounds to the complexity of deciding bounded reparability and we show that these bounds are tight. In particular, when the input tree language are specified with arbitrary bottom-up automata, the problem is CONEXPTIME-complete. The problem remains CONEXPTIME-complete even if we use deterministic non-recursive DTDs to specify the input languages. The complexity of the problem can be reduced if we assume that the alphabet, the set of node lables, is fixed: the problem becomes PSPACE-complete for non-recursive DTDs and CONP-complete for deterministic non-recursive DTDs. Finally, when the restriction tree language R is universal, we show that the bounded reparability problem becomes EXPTIME-complete if the target language is specified by an arbitrary bottom-up tree automaton and becomes tractable (PTIME-complete, in fact) when a deterministic bottom-up automaton is used.

A Declarative Framework for Linking Entities

We introduce and develop a declarative framework for entity linking and, in particular, for entity resolution. As in some earlier approaches, our framework is based on a systematic use of constraints. However, the constraints we adopt are link-to-source constraints, unlike in earlier approaches where source-to-link constraints were used to dictate how to generate links. Our approach makes it possible to focus entirely on the intended properties of the outcome of entity linking, thus separating the constraints from any procedure of how to achieve that outcome. The core language consists of link-to-source constraints that specify the desired properties of a link relation in terms of source relations and built-in predicates such as similarity measures. A key feature of the link-to-source constraints is that they employ disjunction, which enables the declarative listing of all the reasons as to why two entities should be linked. We also consider extensions of the core language that capture collective entity resolution, by allowing inter-dependencies among the link relations. We identify a class of "good'' solutions for entity linking specifications, which we call maximum-value solutions and which capture the strength of a link by counting the reasons that justify it. We study natural algorithmic problems associated with these solutions, including the problem of enumerating the "good'' solutions, and the problem of finding the certain links, which are the links that appear in every "good'' solution. We show that these problems are tractable for the core language, but may become intractable once we allow inter-dependencies among the link relations. We also make some surprising connections between our declarative framework, which is deterministic, and probabilistic approaches such as ones based on Markov Logic Networks.

The Goal Behind the Action: Towards Goal-aware Systems and Applications

Human activity is almost always intentional, be it in a physical context or as part of an interaction with a computer system. By understanding why user-generated events are happening and what purposes they serve, a system can offer a significantly improved and more engaging experience. However, goals and intentions cannot be easily captured. Analyzing user actions such as clicks and purchases can reveal patterns and behaviors but understanding the goals behind these actions is a different and challenging issue. Our work presents a unified, multi-disciplinary, and generic viewpoint for goal management that covers many different cases where goals can be used and techniques with which they can be exploited. Its purpose is to provide a common reference point to the concepts and challenging tasks that should be formally defined when someone wants to approach a data analysis problem from a goal-oriented point of view. This work also serves as a springboard to discuss several open challenges and opportunities for goal-oriented approaches in data management, analysis and sharing systems and applications.

Monadic datalog and regular tree pattern queries

Containment of monadic datalog programs over trees is decidable. The situation is more complex when tree nodes carry labels from an infinite alphabet that can be tested for equality. Then, it matters whether descendant relation is allowed or not: descendant relation can be eliminated easily from monadic programs only when label equalities are not used. With descendant, even containment of linear monadic programs in unions of conjunctive queries is undecidable and positive results are known only for bounded-depth trees. We show that without descendant containment of connected monadic programs is decidable over ranked trees, but over unranked trees it is so only for linear programs. With descendant it becomes decidable over unranked trees under restriction to downward programs: each rule only moves down from the node in the head. This restriction is motivated by regular tree pattern queries, a recent formalism in the area of ActiveXML, which we show to be equivalent to linear downward programs.

Skycube Materialization Using the Topmost Skyline or Functional Dependencies

Given a table $T(Id, D_1,\dots, D_d)$, the skycube of $T$ is the set of skylines w.r.t. to all non empty subsets (subspaces) of the dimensions set $\{D_1,\dots, D_d\}$. In orderto optimize these skyline queries, the solutions proposed so far in the literature either (i) pre-compute all the skylines or (ii) they propose compression techniques so as the derivation of every skyline is performed with little effort. Clearly, solutions (i) do not scale when $d$ is large because of the exponential number of skylines. Solutions (ii) are appealing in terms of skyline derivation but they too suffer from a high computation complexity making them unfeasible in practice. In this paper, we propose a new formalization of the optimization problem: find a minimal set of skylines sufficient to answer every remaining skyline queries while avoiding to use the, possibly large, underlying data. Our solution can be seen as a trade-off between query evaluation time, computational cost for finding what to materialize and the memory space usage. To solve this problem, we need to know if the skyline w.r.t. some dimension set $X$ is included into the skyline w.r.t. $Y$ provided $X$ is included into $Y$. Because of the non-monotonic nature of skylines, it is hard to establish this relationship. By exploiting the classical concept of functional dependencies, we identify cases where the inclusion holds. Equipped with this information, we show how to find the smallest set of skylines to materialize. We conduct a thorough experimental study showing that with the help of a small number of materialized skylines, we drastically reduce the execution time of the remaining skyline queries. We also propose an algorithm for the full materialization of skycubes and compare it to state of the art solutions. We show empirically that our proposal outperforms previous work both on real and synthetic data especially with large dimensionality and/or data size. Finally, we compare our proposal to {\em the closed skycube} technique. It turns that in general our solution requires less storage space and more importantly, it is orders of magnitude faster to obtain when the number of dimensions increases.

Exploiting integrity constraints for cleaning trajectories of RFID-monitored objects

A probabilistic framework for cleaning the data collected by RFID-tracking systems is introduced. What has to be cleaned is the set of trajectories that are the possible interpretations of the readings: a trajectory in this set is a sequence whose generic element is a location covered by the reader(s) that performed the detection at the corresponding time point. The cleaning is guided by integrity constraints, and consists in discarding the inconsistent trajectories and assigning to the others a suitable probability of being the actual ones. The probabilities are evaluated by adopting probabilistic conditioning, that logically consists in these steps. First, the trajectories are assigned a-priori probabilities, obtained by relying on the independence assumption between distinct time points. Then, the probability of each consistent trajectory is revised to take into account the spatio-temporal correlations encoded by the constraints. This is done by conditioning the a-priori probability of each trajectory to the event that the constraints are satisfied: this means taking the ratio of this a-priori probability to the sum of the a-priori probabilities of all the consistent trajectories. Instead of performing these steps by materializing all the trajectories and their a-priori probabilities (which is infeasible, owing to the typically huge number of trajectories to be considered), our approach exploits a data structure (ct-graph) that enables a compact representation of the consistent trajectories and their conditioned probabilities, and an algorithm for efficiently constructing the ct-graph, that progressively builds it while avoiding the construction of portions of the graph corresponding to inconsistent trajectories.

Editorial: The Dark Citations of TODS Papers and What to Do About Itor: Cite the Journal Paper

B-Trees and Cache-Oblivious B-Trees with Different-Sized Atomic Keys

Most B-tree papers assume that all $N$ keys have the same size $K$, that $f=B/K$ keys fit in a disk block, and therefore that the search cost is $O(\log_{f+1} N)$ block transfers. When keys have variable size, B-tree operations have no nontrivial performance guarantees, however. This paper provides B-tree-like performance guarantees on dictionaries that contain keys of different sizes in a model in which keys must be stored and compared as opaque objects. The resulting atomic-key dictionaries exhibit performance bounds in terms of the average key size and match the bounds when all keys are the same size. Atomic key dictionaries can be built with minimal modification to the B-tree structure, simply by choosing the pivot keys properly. This paper describes both static and dynamic atomic-key dictionaries. In the static case, if there are $N$ keys with average size $K$, the search cost is $O(\lceil K/B \rceil \log_{1+\lceil B/K\rceil}N)$ expected transfers. It is not possible to transform these expected bounds into worst-case bounds. The cost to build the tree is $O(NK)$ operations and $O(NK/B)$ transfers if all keys are presented in sorted order. If not, the cost is the sorting cost. For the dynamic dictionaries, the amortized cost to insert a key $\kappa$ of arbitrary length at an arbitrary rank is dominated by the cost to search for $\kappa$. Specifically the amortized cost to insert a key $\kappa$ of arbitrary length and random rank is $O(\lceil K/B \rceil \log_{1+ \lceil B/K\rceil}N + \left| \kappa \right|/B)$ transfers. A dynamic-programming algorithm is shown for constructing an search tree with minimal expected cost. This paper also gives a cache-oblivious static atomic-key B-tree, which achieves the same asymptotic performance as the static B-tree dictionary, mentioned above. A cache-oblivious data structure or algorithm is not parameterized by the block size $B$ or memory size $M$ in the memory hierarchy; rather, it is universal, working simultaneously for all possible values of $B$ or $M$. On a machine with block size $B$, if there are $N$ keys with average size $K$, search operations costs $O(\lceil K/B \rceil \log_{1+\lceil B/K\rceil}N)$ block transfers in expectation. This cache-oblivious layout can be built in $O(N \log NK)$ processor operations.

Scalable Atomic Visibility with RAMP Transactions

Databases can provide scalability by partitioning data across several servers. However, multi-partition, multi-operation transactional access is often expensive, employing coordination-intensive locking, validation, or scheduling mechanisms. Accordingly, many real-world systems avoid mechanisms that provide useful semantics for multi-partition operations. This leads to incorrect behavior for a large class of applications including secondary indexing, foreign key enforcement, and materialized view maintenance. In this work, we identify a new isolation modelRead Atomic (RA) isolationthat matches the requirements of these use cases by ensuring atomic visibility: either all or none of each transactions updates are observed by other transactions. We present algorithms for Read Atomic Multi-Partition (RAMP) transactions that enforce atomic visibility while offering excellent scalability, guaranteed commit despite partial failures (via coordination- free execution), and minimized communication between servers (via partition independence). These RAMP transactions correctly mediate atomic visibility of updates and provide readers with snapshot access to database state by using limited multi-versioning and by allowing clients to independently resolve non- atomic reads. We demonstrate that, in contrast with existing algorithms, RAMP transactions incur limited overheadeven under high contentionand scale linearly to 100 servers.

Bibliometrics

Publication Years 1976-2016
Publication Count 919
Citation Count 29635
Available for Download 919
Downloads (6 weeks) 4499
Downloads (12 Months) 36689
Downloads (cumulative) 775151
Average downloads per article 843
Average citations per article 32
First Name Last Name Award
Divyakant Agrawal ACM Distinguished Member (2010)
ACM Senior Member (2008)
Eric Allman ACM Distinguished Member (2009)
Algirdas Avizienis ACM-IEEE CS Eckert-Mauchly Award (2012)
Hari Balakrishnan ACM Doctoral Dissertation Award (1998)
Michael W. Blasgen ACM Programming Systems and Languages Paper Award (1982)
Roderic G. Cattell ACM Doctoral Dissertation Award (1978)
Donald Chamberlin ACM Software System Award (1988)
Edgar F Codd ACM A. M. Turing Award (1981)
Graham R. Cormode ACM Distinguished Member (2013)
William J Dally ACM-IEEE CS Eckert-Mauchly Award (2010)
David DeWitt ACM Software System Award (2008)
Peter J Denning Outstanding Contribution to ACM Award (1998)
ACM Karl V. Karlstrom Outstanding Educator Award (1996)
ACM Distinguished Service Award (1989)
ACM Programming Systems and Languages Paper Award (1971)
Carla S. Ellis ACM Distinguished Member (2009)
Ahmed Elmagarmid ACM Distinguished Member (2009)
Martin Erwig ACM Senior Member (2008)
Jane Fedorowicz ACM Senior Member (2014)
Alan D Fekete ACM Distinguished Member (2006)
Peter A. Franaszek ACM Paris Kanellakis Theory and Practice Award (2002)
Minos Garofalakis ACM Distinguished Member (2011)
ACM Senior Member (2009)
Shahram Ghandeharizadeh ACM Software System Award (2008)
Calvin C. Gotlieb Outstanding Contribution to ACM Award (2011)
ACM Presidential Award (2002)
Goetz Graefe ACM Software System Award (2008)
Jim Gray ACM A. M. Turing Award (1998)
ACM Software System Award (1988)
ACM Programming Systems and Languages Paper Award (1982)
Jayant R Haritsa ACM Distinguished Member (2009)
Robert L. Hartmann ACM Senior Member (2009)
Gernot Heiser ACM Senior Member (2009)
Gerald Held ACM Software System Award (1988)
Piotr Indyk ACM Paris Kanellakis Theory and Practice Award (2012)
Richard Karp ACM A. M. Turing Award (1985)
Randy H. Katz ACM Karl V. Karlstrom Outstanding Educator Award (1999)
Zvi Kedem Outstanding Contribution to ACM Award (2012)
Won Kim ACM Distinguished Service Award (2001)
David J Kuck ACM-IEEE CS Ken Kennedy Award (2010)
ACM-IEEE CS Eckert-Mauchly Award (1993)
Leslie Lamport ACM A. M. Turing Award (2013)
Bruce Lindsay ACM Programming Systems and Languages Paper Award (1982)
Tok Wang Ling ACM Distinguished Member (2009)
ACM Senior Member (2009)
Jorge Lobo ACM Distinguished Member (2009)
Raymond A Lorie ACM Software System Award (1988)
ACM Programming Systems and Languages Paper Award (1982)
Nancy Lynch ACM-W Athena Lecturer Award (2012)
Paul R McJones ACM Programming Systems and Languages Paper Award (1982)
Jack Minker ACM AAAI Allen Newell Award (2005)
Outstanding Contribution to ACM Award (1985)
Mohamed F Mokbel ACM Senior Member (2013)
Mario A Nascimento ACM Senior Member (2007)
Jeffrey F Naughton ACM Software System Award (2008)
Jian Pei ACM Senior Member (2007)
Thomas G Price ACM Programming Systems and Languages Paper Award (1982)
Vijay V Raghavan ACM Distinguished Member (2012)
Domenico Sacca ACM Senior Member (2007)
Hanan Samet ACM Paris Kanellakis Theory and Practice Award (2011)
Donovan A Schneider ACM Software System Award (2008)
Timoleon Sellis ACM Senior Member (2008)
Abraham Silberschatz ACM Karl V. Karlstrom Outstanding Educator Award (1998)
Donald R Slutz ACM Programming Systems and Languages Paper Award (1971)
Richard T Snodgrass Outstanding Contribution to ACM Award (2004)
Richard E Stearns ACM A. M. Turing Award (1993)
Michael Stonebraker ACM A. M. Turing Award (2014)
ACM Software System Award (1988)
Robert E Tarjan ACM Paris Kanellakis Theory and Practice Award (1999)
ACM A. M. Turing Award (1986)
Robert W Taylor ACM Software System Award (1984)
Srikanta N Tirthapura ACM Senior Member (2009)
Irv Traiger ACM Software System Award (1988)
ACM Programming Systems and Languages Paper Award (1982)
ACM Programming Systems and Languages Paper Award (1971)
Jeffrey D Ullman ACM Karl V. Karlstrom Outstanding Educator Award (1997)
Moshe Y Vardi Outstanding Contribution to ACM Award (2009)
ACM Presidential Award (2008)
ACM Paris Kanellakis Theory and Practice Award (2005)
Jeffrey S Vetter ACM Distinguished Member (2012)
ACM Gordon Bell Prize
Performance (2010)
Mark Allen Weiss ACM Distinguished Member (2011)
Jennifer Widom ACM-W Athena Lecturer Award (2015)
Eugene Wong ACM Software System Award (1988)
Kesheng Wu ACM Distinguished Member (2010)
ACM Senior Member (2007)
Yang Xiang ACM Senior Member (2016)

First Name Last Name Paper Counts
Hector Garcia-Molina 13
Philip Bernstein 13
Ronald Fagin 12
Yufei Tao 12
Jeffrey Ullman 10
Nathan Goodman 9
Richard Snodgrass 9
Dan Suciu 8
Eugene Wong 8
Minos Garofalakis 8
Hanan Samet 8
Dimitris Papadias 8
Sushil Jajodia 8
Phokion Kolaitis 8
Victor Vianu 8
Wenfei Fan 7
Michael Stonebraker 7
Clement Yu 7
Stefano Ceri 7
Don Batory 7
Christian Jensen 7
Meral Özsoyoğlu 7
Wangchiew Tan 7
Raghu Ramakrishnan 7
Serge Abiteboul 7
Hosagrahar Jagadish 7
Surajit Chaudhuri 6
David DeWitt 6
Yannis Ioannidis 6
Leonid Libkin 6
Yehoshua Sagiv 6
Alberto Mendelzon 6
Marianne Winslett 6
Carlo Zaniolo 6
Won Kim 6
Nick Koudas 6
Graham Cormode 6
Floris Geerts 6
VS Subrahmanian 6
Xuemin Lin 6
Sharad Mehrotra 5
Ouri Wolfson 5
Frank Neven 5
Rudolf Bayer 5
Alin Dobra 5
Luis Gravano 5
Susan Davidson 5
Veda Storey 5
Divesh Srivastava 5
Marcelo Arenas 5
Jef Wijsen 5
Laks Lakshmanan 5
Amr El Abbadi 5
Gültekin Özsoyoglu 5
George Kollios 5
Nikos Mamoulis 5
Stijn Vansummeren 5
Per Larson 5
Catriel Beeri 5
David Shipman 5
Michael Franklin 5
Kotagiri Ramamohanarao 5
Shibing Yao 5
Christopher Jermaine 5
Michael Böhlen 5
Jennifer Widom 5
Ke Yi 4
David Lomet 4
Henry Korth 4
David Maier 4
Philip Yu 4
Manlung Yiu 4
Yinong Chen 4
Tiko Kameda 4
Lucian Popa 4
Stavros Christodoulakis 4
Arie Shoshani 4
Phillip Gibbons 4
Dimitrios Gunopulos 4
Florin Rusu 4
Paolo Ciaccia 4
Ziyang Liu 4
Xiaokui Xiao 4
Dan Olteanu 4
Shamkant Navathe 4
Raymond Ng 4
Georg Gottlob 4
Mario Schkolnick 4
Peter Buneman 4
Nick Roussopoulos 4
Dennis Shasha 4
Bengchin Ooi 4
Jan Chomicki 4
Stanley Su 4
Dorothy Denning 4
Sara Cohen 4
Kenneth Sevcik 4
Stefano Paraboschi 4
Benny Kimelfeld 4
Michael Carey 4
Toshihide Ibaraki 3
Peter Lockemann 3
Pierangela Samarati 3
Jorge Pérez 3
Marios Hadjieleftheriou 3
Marco Patella 3
Dmitri Kalashnikov 3
Mankeung Siu 3
Esen Ozkarahan 3
Wim Martens 3
Miron Livny 3
Paolo Tiberio 3
Neoklis Polyzotis 3
Gustavo Alonso 3
Gautam Das 3
Oded Shmueli 3
Martin Kersten 3
Christoph Koch 3
Walid Aref 3
Raymond Lorie 3
Yiping Ke 3
Arnon Rosenthal 3
Elke Rundensteiner 3
Edwin Jacox 3
Edward Sciore 3
Markus Schneider 3
James Rothnie 3
Piero Fraternali 3
Krithi Ramamritham 3
Joseph Hellerstein 3
Yannis Papakonstantinou 3
Nicolas Bruno 3
Gio Wiederhold 3
Cheng Sheng 3
Jan Paredaens 3
Thomas Eiter 3
Anastasia Ailamaki 3
Bettina Kemme 3
Kenneth Salem 3
Samuel Madden 3
Giuseppe Pelagatti 3
Richard Hull 3
Wei Wang 3
Ben Shneiderman 3
Toon Calders 3
Arie Segev 3
Divyakant Agrawal 3
Dennis Severance 3
Bradford Wade 3
Gerhard Weikum 3
Bernhard Seeger 3
William Kent 3
Salvatore March 3
Bruce Lindsay 3
Chen Li 3
Leonid Libkin 3
Jeffrey Vitter 3
Douglas Comer 3
James Cheng 3
Rakesh Agrawal 3
Jim Gray 3
Wilfred Ng 3
Cyrus Shahabi 3
Sergey Melnik 3
Anthony Klug 3
Alfred Aho 3
Jeffreyxu Yu 3
Goetz Graefe 3
Patrick Valduriez 3
Elena Baralis 3
Kevin Chang 3
David Stemple 3
K Lam 3
Dennis McLeod 3
Walter Burkhard 3
Kianlee Tan 3
Wiebren De Jonge 3
James Clifford 3
Alan Fekete 3
Debabrata Dey 3
John Robinson 3
Michael Benedikt 3
Thomas Schwentick 3
Panagiotis Ipeirotis 3
Eliezer Lozinskii 3
Tova Milo 3
Panos Kalnis 3
Sebastian Link 3
Luc Segoufin 3
Guy Lohman 3
Vijay Raghavan 3
Nicolas Spyratos 2
Sven Hartmann 2
Gísli Hjaltason 2
Zhewei Wei 2
Mark Levene 2
Yaacov Weiss 2
Sonia Bergamaschi 2
Gerome Miklau 2
Nikolaus Augsten 2
Haixun Wang 2
Nancy Lynch 2
Marco Tagliasacchi 2
Curtis Dyreson 2
Hamid Pirahesh 2
Giovanni Sacco 2
Letizia Tanca 2
Antonios Deligiannakis 2
Mingxi Wu 2
Feifei Li 2
Jianbin Qin 2
Christos Polyzois 2
Wolfgang Effelsberg 2
Xifeng Yan 2
Dina Bitton 2
Pankaj Agarwal 2
Yin Yang 2
Andrew McGregor 2
James Cheney 2
Giorgio Ghelli 2
Assaf Schuster 2
Christopher 2
Calvin Gotlieb 2
Marco Casanova 2
Jiawei Han 2
Torsten Grust 2
Ron Obermarck 2
E Babb 2
Patricia Griffiths 2
Maurice Herlihy 2
Debra Vandermeer 2
Kyriakos Mouratidis 2
Mauro Negri 2
Ting Yu 2
Xiaolei Qian 2
Davide Martinenghi 2
Guoliang Li 2
Claudio Bettini 2
Georgia Koutrika 2
John Smith 2
Louiqa Raschid 2
Peter Wood 2
Val Tannen 2
Lee Hollaar 2
Junghoo Cho 2
Dario Colazzo 2
Alan Nash 2
John Kam 2
Todd Green 2
Balder Cate 2
Bingsheng He 2
Vagelis Hristidis 2
Patrick O'Neil 2
Vassilis Athitsos 2
Joseph Wald 2
Chaitanya Mishra 2
Williamfrank King 2
H Kung 2
Sanjeev Khanna 2
Weidong Chen 2
Yannis Manolopoulos 2
Alexander Markowetz 2
Alin Deutsch 2
Claudio GutiéRrez 2
Yidong Yuan 2
Liyan Yuan 2
Jian Pei 2
Kyriacos Pavlou 2
Jan Bussche 2
Alan Smith 2
Jan Van Den Bussche 2
Dirk Van Gucht 2
Ahmed Elmagarmid 2
Ihab Ilyas 2
Haran Boral 2
Barron Housel 2
Gabriel Kuper 2
Jürg Nievergelt 2
Chuan Xiao 2
Philip Lehman 2
Paul Sorenson 2
Robert Goldstein 2
Morton Astrahan 2
James Mehl 2
Michael Hammer 2
Peter Denning 2
Elisa Bertino 2
Evaggelia Pitoura 2
Raymond Wong 2
Diane Smith 2
Ilaria Bartolini 2
Sakti Pramanik 2
Werner Nutt 2
Gao Cong 2
Theo Härder 2
Romulo Gonçalves 2
Qing Zhang 2
Ricardo Jiménez-Peris 2
Wei Wang 2
Alistair Moffat 2
Wenchi Hou 2
Kesheng Wu 2
Paolo Atzeni 2
Stephen Sherman 2
Sergio Flesca 2
Kenneth Ross 2
Andrew Whinston 2
Ting Deng 2
Francesco Malvestuto 2
Chinwan Chung 2
Angela Bonifati 2
Tom Ameloot 2
Balder Ten Cate 2
Subramanian Arumugam 2
Abhijit Pol 2
Izchak Sharfman 2
Qing Liu 2
Yanlei Diao 2
Anastasios Kementsietsidis 2
Allen Van Gelder 2
Robert Ross 2
Panagiotis Karras 2
George Loizou 2
Jens Teubner 2
Justin Zobel 2
Reind Van De Riet 2
Amit Kumar 2
Fei Xu 2
Michael Siegel 2
Rabia Nuray-Turan 2
Filippo Furfaro 2
Mohamed Mokbel 2
Roger King 2
Arash Termehchy 2
Ron Sacks-Davis 2
Vivek Narasayya 2
Peter Franaszek 2
Jan Schlorer 2
Yair Wand 2
David Embley 2
Sheldon Finkelstein 2
Geert Bex 2
Michalis Potamias 2
Marta Patiño-Martínez 2
Moshe Vardi 2
Kyuseok Shim 2
Tamer Özsu 2
Tolga Bozkaya 2
Gottfried Vossen 2
Christos, Papadimitriou 2
Jeffrey Naughton 2
Donghui Zhang 2
Panos Chrysanthis 2
Anindya Datta 2
Sudipto Guha 2
Barbara Pernici 2
Lei Chen 2
Pierre Bourhis 2
Witold Litwin 2
Donald Chamberlin 2
Irving Traiger 2
Ralf Güting 2
Daniel Ries 2
Jack Minker 2
Millist Vincent 2
Wenfei Fan 2
Alexander Thomasian 2
Jiaheng Lu 2
S Muthukrishnan 2
Ken Smith 2
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Joseph Traub 1
Davidihsin Cheng 1
Giorgos Flouris 1
Irini Fundulaki 1
Kim Nguy˜ˆen 1

Affiliation Paper Counts
North Dakota State University 1
Pohang University of Science and Technology 1
The Graduate Center 1
Miami University Oxford 1
Universitat Pompeu Fabra 1
Griffith University 1
Public University of Navarrea 1
Alexandria University 1
Concordia University, Montreal 1
U.S. Army Research Laboratory 1
University of Belgrade 1
SAP AG 1
Free Universities of Brussels 1
Schlumberger 1
Amdahl Corporation 1
General Research Corporation 1
Fujitsu Services Limited 1
Siemens USA 1
Universite Paris-Est 1
Niihama National College of Technology 1
King Abdullah University of Science and Technology 1
Academic College of Tel-Aviv - Yaffo 1
Computer Sciences Corp. 1
Zirve University 1
Hamad bin Khalifa University 1
INRIA Saclay 1
Specifications and Verification Laboratory 1
Dalhousie University 1
University of Kentucky 1
Charles University in Prague 1
Oregon Health and Science University 1
University of Heidelberg 1
Justus Liebig University Giessen 1
University of Tubingen 1
Universite Charles de Gaulle Lille 3 1
Wichita State University 1
Parametric Technology Corporation 1
Wright State University 1
The University of North Carolina at Greensboro 1
Agricultural University of Athens 1
LSI Corporation 1
University of L'Aquila 1
Memorial University of Newfoundland 1
Chinese Academy of Sciences 1
James Cook University, Australia 1
Bucknell University 1
University of Liverpool 1
University of Toledo 1
University College London 1
University of Macau 1
Open University of Israel 1
University of Bari 1
University of Delaware 1
Tufts University 1
Bioinformatics Institute, A-Star, Singapore 1
Chongqing University 1
Andhra University 1
Universite Claude Bernard Lyon 1 1
University of California, San Francisco 1
Portland State University 1
University of Siegen 1
Southern Illinois University 1
University of Strathclyde 1
Shanghai Jiaotong University 1
The University of North Carolina at Chapel Hill 1
San Diego Supercomputer Center 1
University of Genoa 1
University of Tokyo 1
Tver State University 1
Nippon Telegraph & Telephone 1
University of Freiburg 1
University of Nebraska - Lincoln 1
Ben-Gurion University of the Negev 1
Stevens Institute of Technology 1
University of Hamburg 1
J.P. Morgan Chase & Co. 1
Siemens AG 1
Ludwig Maximilian University of Munich 1
Monmouth University 1
Xerox Webster Research Center 1
Universite Joseph Fourier 1
Queen's University Belfast 1
Temple University 1
Baruch College 1
Institute of Computing Technology Chinese Academy of Sciences 1
Umea University 1
Panasonic Technologies, Inc. 1
Penn State Erie, The Behrend College 1
McMaster University 1
University of Nevada, Las Vegas 1
Illinois State University 1
Federal University of Rio de Janeiro 1
Ecole Normale Superieure 1
Compaq Systems Research Center 1
Humboldt University of Berlin 1
NASA Langley Research Center 1
Emory University 1
University of Buenos Aires 1
Florida State University 1
New Mexico State University Las Cruces 1
Victoria University of Wellington 1
University of Amsterdam 1
Polytechnic University - Brooklyn 1
University of Haifa 1
Courant Institute of Mathematical Sciences 1
IBM India Research Laboratory New Delhi 1
Toyohashi University of Technology 1
Cleveland State University 1
University of Nebraska 1
University of Bergamo 1
Dongduk Women's University 1
University of Houston 1
University of Michigan-Dearborn 1
Federal University of Rio Grande do Sul 1
La Trobe University 1
University of Missouri-Kansas City 1
University of Bonn 1
Old Dominion University 1
University of South Florida Tampa 1
Johann Wolfgang Goethe University of Frankfurt 1
Musashino Electrical Communication Lab 1
Technical University in Braunschweig 1
Bremen University 1
Tektronix Incorporated 1
Jet Propulsion Laboratory 1
University of Kansas 1
Silicon Graphics, Inc. 1
Linkoping University 1
Universite des Sciences et Technologies de Lille 1
University of Montreal 1
University of St. Thomas, Minnesota 1
University of Central Oklahoma 1
Washington University in St. Louis 1
Santa Clara University 1
University of Southern Maine 1
Institute of Computer Science of the Polish Academy of Sciences 1
Queensland University of Technology 1
Technical University of Darmstadt 1
Baylor University 1
Technical University of Denmark 1
Japan Advanced Institute of Science and Technology 1
Kobe University 1
BBN Technologies 1
Oakland University 1
Shibaura Institute of Technology 1
University of Zurich 1
Roma Tre University 1
Brno University of Technology 1
Renmin University of China 1
Polytechnic University - Long Island Graduate Center 1
University of Louisiana at Lafayette 1
Abo Akademi University 1
University of Southern California, Information Sciences Institute 1
University of Tennessee, Knoxville 1
University of Stuttgart 1
University of Colorado at Boulder 2
University of Munster 2
Kansas State University 2
University of Johannesburg 2
Universite Pierre et Marie Curie 2
University of Crete 2
Institute for Infocomm Research, A-Star, Singapore 2
National Technical University of Athens 2
University of Salzburg 2
University of Modena and Reggio Emilia 2
North Carolina State University 2
Ecole Normale Superieure de Cachan 2
University of Minnesota System 2
Google Inc. 2
NASA Goddard Space Flight Center 2
City University of New York 2
Louisiana State University 2
CNRS Centre National de la Recherche Scientifique 2
University of Zagreb 2
Universite Paris Dauphine 2
Sabanci University 2
Birkbeck University of London 2
University of Vermont 2
University of Manitoba 2
Istituto Di Calcolo E Reti Ad Alte Prestazioni, Rende 2
The University of Western Ontario 2
Kyoto University 2
State University of New York at Albany 2
Oregon State University 2
Indian Institute of Science 2
University of Passau 2
University of Tsukuba 2
AT&T Inc. 2
Polish Academy of Sciences 2
Sun Microsystems 2
University of Saskatchewan 2
General Electric Company 2
University of Guelph 2
RWTH Aachen University 2
University of New Brunswick 2
Florida Atlantic University 2
Athens University of Economics and Business 2
Leiden University 2
Federal Judicial Center 2
University of Louisville 2
Basilicata University Potenza 2
University of Florence 2
The University of Warwick 2
University of Central Florida 2
University of Bayreuth 2
University of Iowa 2
South China University of Technology 2
University of Konstanz 2
Northeastern University 2
NICTA 2
Commonwealth Scientific and Industrial Research Organization 2
Syracuse University 2
Hiroshima University 2
Boston College 2
University of California System 2
Indian Institute of Technology, Delhi 2
Eindhoven University of Technology 2
University of the Saarland 2
International Computer Science Institute 2
Institute of Computer Science Crete 2
Laboratoire Traitement et Communication de l'Information 2
Yahoo Research Barcelona 2
Max Planck Institute for Informatics 3
Nagoya University 3
McGill University 3
Zhejiang University 3
IBM Tokyo Research Laboratory 3
Iowa State University 3
University of Ioannina 3
Rice University 3
University of Auckland 3
Universite Paris 7- Denis Diderot 3
MIT Computer Science and Artificial Intelligence Laboratory 3
University of Mannheim 3
University of Salerno 3
Northwestern University 3
University of Kaiserslautern 3
University of Ulm 3
University of Mons-Hainaut 3
University of Massachusetts System 3
Indian Institute of Technology, Bombay 3
University of Brescia 3
University of Washington 3
University of Wisconsin 3
University of Wisconsin Milwaukee 3
University of Twente 3
Technical University of Clausthal 3
Catholic University of Leuven 3
INRIA Futurs 3
Virginia Tech 3
Kent State University 3
University of Oklahoma 3
University of Roma La Sapienza 3
University of London 3
University of Massachusetts Lowell 3
University of Michigan 4
George Washington University 4
Tel Aviv University 4
Unisys 4
Brigham Young University 4
Hong Kong Polytechnic University 4
University of California , Merced 4
Polytechnic Institute of Turin 4
University of Turin 4
Georgia State University 4
Philipps-Universitat Marburg 4
Seoul National University 4
Bilkent University 4
Aristotle University of Thessaloniki 4
University of Udine 4
Technical University of Madrid 4
University at Buffalo, State University of New York 4
INRIA Rocquencourt 4
University of Dortmund 4
Microsoft Research Asia 4
Aalto University 4
Universite Libre de Bruxelles 5
SRI International 5
University of Texas at Arlington 5
Ohio State University 5
Duke University 5
Worcester Polytechnic Institute 5
Universidad de Chile 5
Florida International University 5
Southern Methodist University 5
Singapore Management University 5
University of Hagen 5
Sun Yat-Sen University 5
Italian National Research Council 5
University of Sydney 5
Swiss Federal Institute of Technology, Zurich 5
University of Rochester 5
University of Pisa 5
University of California, Riverside 5
University of Aarhus 5
Rutgers University 5
Michigan State University 5
Northeastern University China 5
Microelectronics Computer Technology Corporation 6
University of Helsinki 6
University of Illinois 6
Brown University 6
Center for Mathematics and Computer Science - Amsterdam 6
MITRE Corporation 6
Beihang University 6
Hong Kong Baptist University 6
University of California, Davis 6
University of Pittsburgh 6
Carleton University 6
Harbin Institute of Technology 6
Hewlett-Packard 6
Indiana University 6
Technical University of Crete 6
Swiss Federal Institute of Technology, Lausanne 6
University of Athens 6
Pontificia Universidad Catolica de Chile 6
University of South Australia 6
Yahoo Research Labs 6
Vrije Universiteit Amsterdam 7
RMIT University 7
City University of Hong Kong 7
Georgia Institute of Technology 7
Ecoles polytechniques federales 7
University of Utah 7
University of Regina 7
Fujitsu 8
AT&T Laboratories Florham Park 8
Free University of Bozen-Bolzano 8
HP Labs 8
University Michigan Ann Arbor 8
University of Queensland 8
Korea Advanced Institute of Science & Technology 8
Intel Corporation 8
Intel Research Laboratories 8
Yale University 9
Lawrence Berkeley National Laboratory 9
University of Antwerp 9
University of Calabria 9
Universite Paris-Sud XI 9
Stony Brook University 9
Microsoft 9
Nanyang Technological University 10
The University of Hong Kong 10
University of Texas at Austin 10
INRIA Institut National de Rechereche en Informatique et en Automatique 10
Simon Fraser University 10
University of California, Santa Barbara 10
Karlsruhe Institute of Technology, Campus South 10
University of Minnesota Twin Cities 10
University of Milan 10
Pennsylvania State University 11
Arizona State University 11
IBM Research 11
Vienna University of Technology 11
Technical University of Munich 11
Tsinghua University 11
Boston University 12
Technion - Israel Institute of Technology 12
Hebrew University of Jerusalem 13
The University of British Columbia 13
Case Western Reserve University 14
George Mason University 14
University of Melbourne 14
Carnegie Mellon University 14
University of Bologna 14
University of Massachusetts Amherst 15
Aalborg University 15
Oracle Corporation 15
University of Alberta 15
Cornell University 16
University of Washington Seattle 16
University of California, Los Angeles 16
University of Illinois at Chicago 16
Columbia University 16
Harvard University 17
National University of Singapore 17
New York University 17
University of California, Santa Cruz 17
University of Illinois at Urbana-Champaign 18
University of California, Irvine 18
University of Arizona 18
Hasselt University 18
Princeton University 19
University of Oxford 19
University of Southern California 19
Chinese University of Hong Kong 20
University of Pennsylvania 20
IBM 21
Microsoft Research 21
Massachusetts Institute of Technology 22
University of New South Wales 22
University of California, San Diego 23
University of Waterloo 24
Alcatel-Lucent Bell Labs 25
University of Edinburgh 26
Purdue University 27
IBM Thomas J. Watson Research Center 30
University of Wisconsin Madison 32
Politecnico di Milano 34
University of Florida 37
University of Toronto 38
University of California, Berkeley 39
Stanford University 43
Hong Kong University of Science and Technology 44
University of Maryland 44
IBM Almaden Research Center 93

ACM Transactions on Database Systems (TODS)
Archive


2016
Volume 41 Issue 2, June 2016  Issue-in-Progress
Volume 41 Issue 1, April 2016 Invited Paper from ICDT 2015, SIGMOD 2014, EDBT 2014 and Regular Papers
Volume 40 Issue 4, February 2016 Special Issue: Invited 2014 PODS and EDBT Revised Articles

2015
Volume 40 Issue 3, October 2015
Volume 40 Issue 2, June 2015
Volume 40 Issue 1, March 2015

2014
Volume 39 Issue 4, December 2014 Invited Articles Issue, SIGMOD 2013, PODS 2013 and ICDT 2013
Volume 39 Issue 3, September 2014
Volume 39 Issue 2, May 2014
Volume 39 Issue 1, January 2014

2013
Volume 38 Issue 4, November 2013 Invited papers issue
Volume 38 Issue 3, August 2013
Volume 38 Issue 2, June 2013
Volume 38 Issue 1, April 2013

2012
Volume 37 Issue 4, December 2012
Volume 37 Issue 3, August 2012
Volume 37 Issue 2, May 2012
Volume 37 Issue 1, February 2012

2011
Volume 36 Issue 4, December 2011
Volume 36 Issue 3, August 2011
Volume 36 Issue 2, May 2011
Volume 36 Issue 1, March 2011

2010
Volume 35 Issue 4, November 2010
Volume 35 Issue 3, July 2010
Volume 35 Issue 2, April 2010
Volume 35 Issue 1, February 2010

2009
Volume 34 Issue 4, December 2009
Volume 34 Issue 3, August 2009
Volume 34 Issue 2, June 2009
Volume 34 Issue 1, April 2009

2008
Volume 33 Issue 4, November 2008
Volume 33 Issue 3, August 2008
Volume 33 Issue 2, June 2008
Volume 33 Issue 1, March 2008

2007
Volume 32 Issue 4, November 2007
Volume 32 Issue 3, August 2007
Volume 32 Issue 2, June 2007
Volume 32 Issue 1, March 2007

2006
Volume 31 Issue 4, December 2006
Volume 31 Issue 3, September 2006
Volume 31 Issue 2, June 2006
Volume 31 Issue 1, March 2006

2005
Volume 30 Issue 4, December 2005 Special Issue: SIGMOD/PODS 2004
Volume 30 Issue 3, September 2005
Volume 30 Issue 2, June 2005
Volume 30 Issue 1, March 2005 Special Issue: SIGMOD/PODS 2003

2004
Volume 29 Issue 4, December 2004
Volume 29 Issue 3, September 2004
Volume 29 Issue 2, June 2004
Volume 29 Issue 1, March 2004

2003
Volume 28 Issue 4, December 2003
Volume 28 Issue 3, September 2003
Volume 28 Issue 2, June 2003
Volume 28 Issue 1, March 2003

2002
Volume 27 Issue 4, December 2002
Volume 27 Issue 3, September 2002
Volume 27 Issue 2, June 2002
Volume 27 Issue 1, March 2002

2001
Volume 26 Issue 4, December 2001
Volume 26 Issue 3, September 2001
Volume 26 Issue 2, June 2001
Volume 26 Issue 1, March 2001

2000
Volume 25 Issue 4, Dec. 2000
Volume 25 Issue 3, Sept. 2000
Volume 25 Issue 2, June 2000
Volume 25 Issue 1, March 2000

1999
Volume 24 Issue 4, Dec. 1999
Volume 24 Issue 3, Sept. 1999
Volume 24 Issue 2, June 1999
Volume 24 Issue 1, March 1999

1998
Volume 23 Issue 4, Dec. 1998
Volume 23 Issue 3, Sept. 1998
Volume 23 Issue 2, June 1998
Volume 23 Issue 1, March 1998

1997
Volume 22 Issue 4, Dec. 1997
Volume 22 Issue 3, Sept. 1997
Volume 22 Issue 2, June 1997
Volume 22 Issue 1, March 1997

1996
Volume 21 Issue 4, Dec. 1996
Volume 21 Issue 3, Sept. 1996
Volume 21 Issue 2, June 1996
Volume 21 Issue 1, March 1996

1995
Volume 20 Issue 4, Dec. 1995
Volume 20 Issue 3, Sept. 1995
Volume 20 Issue 2, June 1995
Volume 20 Issue 1, March 1995

1994
Volume 19 Issue 4, Dec. 1994
Volume 19 Issue 3, Sept. 1994
Volume 19 Issue 2, June 1994
Volume 19 Issue 1, March 1994

1993
Volume 18 Issue 4, Dec. 1993
Volume 18 Issue 3, Sept. 1993
Volume 18 Issue 2, June 1993
Volume 18 Issue 1, March 1993

1992
Volume 17 Issue 4, Dec. 1992
Volume 17 Issue 3, Sept. 1992
Volume 17 Issue 2, June 1992
Volume 17 Issue 1, March 1992

1991
Volume 16 Issue 4, Dec. 1991
Volume 16 Issue 3, Sept. 1991
Volume 16 Issue 2, June 1991
Volume 16 Issue 1, March 1991

1990
Volume 15 Issue 4, Dec. 1990
Volume 15 Issue 3, Sept. 1990
Volume 15 Issue 2, June 1990
Volume 15 Issue 1, March 1990

1989
Volume 14 Issue 4, Dec. 1989
Volume 14 Issue 3, Sept. 1989
Volume 14 Issue 2, June 1989
Volume 14 Issue 1, March 1989

1988
Volume 13 Issue 4, Dec. 1988
Volume 13 Issue 3, Sept. 1988
Volume 13 Issue 2, June 1988
Volume 13 Issue 1, March 1988

1987
Volume 12 Issue 4, Dec. 1987
Volume 12 Issue 3, Sept. 1987
Volume 12 Issue 2, June 1987
Volume 12 Issue 1, March 1987

1986
Volume 11 Issue 4, Dec. 1986
Volume 11 Issue 3, Sept. 1986
Volume 11 Issue 2, June 1986
Volume 11 Issue 1, March 1986

1985
Volume 10 Issue 4, Dec. 1985
Volume 10 Issue 3, Sept. 1985
Volume 10 Issue 2, June 1985
Volume 10 Issue 1, March 1985

1984
Volume 9 Issue 4, Dec. 1984
Volume 9 Issue 3, Sept. 1984
Volume 9 Issue 2, June 1984
Volume 9 Issue 1, March 1984

1983
Volume 8 Issue 4, Dec. 1983
Volume 8 Issue 3, Sept. 1983
Volume 8 Issue 2, June 1983
Volume 8 Issue 1, March 1983

1982
Volume 7 Issue 4, Dec. 1982
Volume 7 Issue 3, Sept. 1982
Volume 7 Issue 2, June 1982
Volume 7 Issue 1, March 1982

1981
Volume 6 Issue 4, Dec. 1981
Volume 6 Issue 3, Sept. 1981
Volume 6 Issue 2, June 1981
Volume 6 Issue 1, March 1981

1980
Volume 5 Issue 4, Dec. 1980
Volume 5 Issue 3, Sept. 1980
Volume 5 Issue 2, June 1980
Volume 5 Issue 1, March 1980

1979
Volume 4 Issue 4, Dec. 1979
Volume 4 Issue 3, Sept. 1979
Volume 4 Issue 2, June 1979
Volume 4 Issue 1, March 1979

1978
Volume 3 Issue 4, Dec. 1978
Volume 3 Issue 3, Sept. 1978
Volume 3 Issue 2, June 1978
Volume 3 Issue 1, March 1978

1977
Volume 2 Issue 4, Dec. 1977
Volume 2 Issue 3, Sept. 1977
Volume 2 Issue 2, June 1977
Volume 2 Issue 1, March 1977

1976
Volume 1 Issue 4, Dec. 1976
Volume 1 Issue 3, Sept. 1976
Volume 1 Issue 2, June 1976
Volume 1 Issue 1, March 1976 Special issue: papers from the international conference on very large data bases: September 22–24, 1975, Framingham, MA
 
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