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"Equivalence of Keyed Relational Schemas by Conjunctive Queries."
Joseph Albert, Yannis E. Ioannidis, Raghu Ramakrishnan (1999)
- Joseph Albert, Yannis E. Ioannidis, Raghu Ramakrishnan:
Equivalence of Keyed Relational Schemas by Conjunctive Queries. J. Comput. Syst. Sci. 58(3): 512-534 (1999)
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