1. Precursor to SQL.

["System R: Relational Approach to Database Management", IBM Res Lab, San Jose, reprinted in Readings in Database Systems].

2. U Leeds. Theorem prover specification language. Pattern matching notation similar to Prolog. Compiled into Lisp.

[Proc ICJAI 13].

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SEPIA « SEPP « Seque « Sequel » Sequenced Packet Exchange » sequencer » Sequent