Computable queries for relational data bases

A relational model of data for large shared data banks

E. F. Codd · Communications of the ACM · 1970 · 5.2K citations · Full text

Relational Database, Engineering, Computer Architecture +23

A relational model of data for large shared data banks

E. F. Codd · Communications of the ACM · 1983 · 4.8K citations

Relational Database, Engineering, Computer Architecture +23

Optimal implementation of conjunctive queries in relational data bases

Ashok K. Chandra, Philip M. Merlin · 1977 · 1.2K citations · Full text

Relational Database, Engineering, Computational Complexity +16

Formal Languages and their Relation to Automata

James B. Morris · Nuclear Science and Engineering · 1970 · 1K citations

Theory Of Computing, Programming Language Theory, Syntax +14

Dependency Structures of Data Base Relationships.

William W. Armstrong · IFIP Congress · 1974 · 739 citations

Engineering, Structured Data, Dependency Structures +4