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A comment on Andl, a relational language that is not SQL, is coming to Postgres. Parent comment

Re:Andl, a relational language that is not SQL, is coming to... by macdice on Monday May 30, 2016 @08:51PM (#11803992)
Codd gave us the relational model[1], but SQL was the work of Chamberlin and Boyce in System R[2]. It looks pretty familiar to modern eyes! But I believe Oracle was commercialised sooner, and the rest is history.

[1] https://www.seas.upenn.edu/~zives/03f/cis550/codd.pdf [2] http://people.eecs.berkeley.edu/~brewer/cs262/SystemR.pdf

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