Storage structure and physical data independence
- C.J. Date
- P. Hopewell
- 1971
- SIGFIDET 1971
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5 results at SIGFIDET 1971
Unacceptable file operations in a relational data base
- I.J. Heath
- 1971
- SIGFIDET 1971
File definition and logical data independence
- C.J. Date
- P. Hopewell
- 1971
- SIGFIDET 1971
A data base sublanguage founded on the relational calculus
- E.F. Codd
- 1971
- SIGFIDET 1971
Normalized data base structure: A brief tutorial
- E.F. Codd
- 1971
- SIGFIDET 1971