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Alpha (programming language)

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The Alpha language was the original database language developed by Edgar F. Codd, the inventor of the relational database approach. It was defined in Codd's 1971 paper "A Data Base Sublanguage Founded on the Relational Calculus"[1]. It was eventually supplanted by SQL (which is however based on the relational algebra defined by Codd in "Relational Completeness of Data Base Sublanguages"[2]), which IBM developed for the first commercial relational database product.

References

  1. ^ Codd, E.F., "Data Base Sublanguage Founded on the Relational Calculus", Proc. 1971 ACM-SIGFIDET Workshop on Data Description, Access, and Control, San Diego.
  2. ^ Codd, E.F., "Relational Completeness of Data Base Sublanguages", IBM Research Laboratory, RJ987, 1972.

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