Database Systems (TODS)


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ACM Transactions on Database Systems (TODS), Volume 24 Issue 4, Dec. 1999

Improving database design through the analysis of relationships
Debabrata Dey, Veda C. Storey, Terence M. Barron
Pages: 453-486
DOI: 10.1145/331983.331984
Much of the work on conceptual modeling involves the use of an entity-relationship model in which binary relationships appear as associations between two entities. Relationships involving more than two entities are considered rare and,...

Security of random data perturbation methods
Krishnamurty Muralidhar, Rathindra Sarathy
Pages: 487-493
DOI: 10.1145/331983.331986
Statistical databases often use random data perturbation (RDP) methods to protect against disclosure of confidential numerical attributes. One of the key requirements of RDP methods is that they provide the appropriate level of security against...

An ontological analysis of the relationship construct in conceptual modeling
Yair Wand, Veda C. Storey, Ron Weber
Pages: 494-528
DOI: 10.1145/331983.331989
Conceptual models or semantic data models were developed to capture the meaning of an application domain as perceived by someone. Moreover, concepts employed in semantic data models have recently been adopted in object-oriented approaches to...

The SIFT information dissemination system
Tak W. Yan, Hector Garcia-Molina
Pages: 529-565
DOI: 10.1145/331983.331992
Information dissemination is a powerful mechanism for finding information in wide-area environments. An information dissemination server accepts long-term user queries, collects new documents from information sources, matches the documents...