Answering queries using views (extended abstract)
PODS '95 Proceedings of the fourteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Principles of Database and Knowledge-Base Systems: Volume II: The New Technologies
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Foundations of Databases: The Logical Level
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Determinacy and rewriting of conjunctive queries over unary database schemas
Proceedings of the 2011 ACM Symposium on Applied Computing
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