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Article Id: WHEBN0003946520
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Title: Isbl  
Author: World Heritage Encyclopedia
Language: English
Subject: Query language, SQL, IBM Business System 12, Projection (relational algebra), Molecular Query Language
Collection: Query Languages
Publisher: World Heritage Encyclopedia


ISBL (Information Systems Base Language) is the relational algebra notation that was invented for PRTV, one of the earliest database management systems to implement E.F. Codd's relational model of data.

See also

  • IBM Business System 12 - An IBM industrial strength relational DBMS influenced by ISBL. It was developed for use by customers of IBM's time-sharing service bureaux in various countries the early 1980s.

External links

  • Sample ISBL usage

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