Codd, E.F. "A database sublanguage founded on the relational calculus" pp35-68

(1971)

[ACM] (1971) [ACM] Proceedings on the ACM SIGFIDET Workshop on Data Description, Access, and Control, San Diego, California (November 1971)   Ted Codd

Languages mentioned

  • ALPHA {1971} Data-query language based on relational calculus
  • GIS {1966} General Information Store
  • IDS {1964} Integrated Data Store
  • IMS {1970}
  • LEAP {1968} Language for the Expression of Associative Procedures
  • MacAims {1968} Set-based data retrieval language
  • STDS {1968} Set based language
  • TDMS {1970} Time-Shared Data Management System
  • TRAMP {1968} Associative memory language
  • UL/1 {1965} Early non-procedural query language