The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
The theory of joins in relational databases
Open accessAbstract
Answering queries in a relational database often requires that the natural join of two or more relations be computed. However, the result of a join may not be what one expects. In this paper we give efficient algorithms to determine whether the join of several relations has the intuitively expected value (is lossless ) and to determine whether a set of relations has a subset with a lossy join. These algorithms assume that all data dependencies are functional. We then discuss the extension of our techniques to the case where data dependencies are multivalued.
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Cites
A relational model of data for large shared data banks
Codd, E. F. (1970) · Communications of the ACM · doi:10.1145/362384.362685 · Cited by 5,547
Cited by
Information systems theoretical foundations
Pawlak, Z. (1981) · Information Systems · doi:10.1016/0306-4379(81)90023-5 · Cited by 665
Fuzzy functional dependencies and lossless join decomposition of fuzzy relational database systems
Raju, K. V. S. V. N., & Majumdar, A. K. (1988) · ACM Transactions on Database Systems · doi:10.1145/42338.42344 · Cited by 406
Elements of Relational Database Theory
KANELLAKIS, P. C. (1990) · Formal Models and Semantics · doi:10.1016/b978-0-444-88074-1.50022-6 · Cited by 259
Metadata
- Authors
- Aho, A. V., Beeri, C., & Ullman, J. D.
- Venue
- ACM Transactions on Database Systems
- Published
- 1979-09
- Volume
- 4
- Issue
- 3
- Pages
- 297-314
- ISSN
- 0362-5915 (ISSN-L)
- 1557-4644
- OpenAlex
- W2032386524
- Cited by
- 423
- References
- 1
- FWCI
- 48.07
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Aho, A. V., Beeri, C., & Ullman, J. D. (1979). The theory of joins in relational databases. ACM Transactions on Database Systems. https://doi.org/10.1145/320083.320091
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