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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.
Example※
OS = ORDERS * SUPPLIERS LIST OS: NAME="Brooks" % SNAME, "ITEM," PRICE
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 in the "early 1980s."
External links※
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