Database Systems (TODS)


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ACM Transactions on Database Systems (TODS), Volume 19 Issue 1, March 1994

A taxonomy for secure object-oriented databases
Martin S. Olivier, Sebastiaan H. von Solms
Pages: 3-46
DOI: 10.1145/174638.174640
This paper proposes a taxonomy for secure object-oriented databases in order to clarify the issues in modeling and implementing such databases. It also indicates some implications of the various choices one may make when designing such a...

A modified random perturbation method for database security
Patrick Tendick, Norman Matloff
Pages: 47-63
DOI: 10.1145/174638.174641
The random data perturbation (RDP) method of preserving the privacy of individual records in a statistical database is discussed. In particular, it is shown that if confidential attributes are allowed as query-defining variables, severe biases...

On completeness of historical relational query languages
James Clifford, Albert Croker, Alexander Tuzhilin
Pages: 64-116
DOI: 10.1145/174638.174642
Numerous proposals for extending the relational data model to incorporate the temporal dimension of data have appeared in the past several years. These proposals have differed considerably in the way that the temporal dimension has been...

Altruistic locking
Kenneth Salem, Héctor García-Molina, Jeannie Shands
Pages: 117-165
DOI: 10.1145/174638.174639
Long-lived transactions (LLTs) hold on to database resources for relatively long periods of time, significantly delaying the completion of shorter and more common transactions. To alleviate this problem we propose an extension to two-phase...