Database Systems (TODS)


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ACM Transactions on Database Systems (TODS), Volume 3 Issue 4, Dec. 1978

Generation and search of clustered files
G. Salton, A. Wong
Pages: 321-346
DOI: 10.1145/320289.320291
A classified, or clustered file is one where related, or similar records are grouped into classes, or clusters of items in such a way that all items within a cluster are jointly retrievable. Clustered files are easily adapted to broad and narrow...

Concepts and capabilities of a database computer\
Jayanta Banerjee, David K. Hsiao, Richard I. Baum
Pages: 347-384
DOI: 10.1145/320289.320292
The concepts and capabilities of a database computer (DBC) are given in this paper. The proposed design overcomes many of the traditional problems of database system software and is one of the first to describe a complete data-secure computer...

An extended owner-coupled set data model and predicate calculus for database management
J. Bradley
Pages: 385-416
DOI: 10.1145/320289.320294
A data model is presented, based on the extension of the concept of a DBTG owner-coupled set to permit static and dynamic sets and a new kind of set referred to as a virtual set. The notion of...

Improving the human factors aspect of database interactions
Ben Shneiderman
Pages: 417-439
DOI: 10.1145/320289.320295
The widespread dissemination of computer and information systems to nontechnically trained individuals requires a new approach to the design and development of database interfaces. This paper provides the motivational background for controlled...

The difficulty of optimum index selection
Douglas Comer
Pages: 440-445
DOI: 10.1145/320289.320296
Given a file on a secondary store in which each record has several attributes, it is usually advantageous to build an index mechanism to decrease the cost of conducting transactions to the file. The problem of selecting attributes over which to...