An introduction to database systems: vol. I (4th ed.)
An introduction to database systems: vol. I (4th ed.)
A relational model of data for large shared data banks
Communications of the ACM
ACM SIGMOD Record
Normalized data base structure: a brief tutorial
SIGFIDET '71 Proceedings of the 1971 ACM SIGFIDET (now SIGMOD) Workshop on Data Description, Access and Control
A data base sublanguage founded on the relational calculus
SIGFIDET '71 Proceedings of the 1971 ACM SIGFIDET (now SIGMOD) Workshop on Data Description, Access and Control
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