Nonprocedural language: Difference between revisions

Revision as of 21:28, 15 February 2009

Revision as of 21:28, 15 February 2009

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{{Orphan|date=February 1947}}

'''NPL''' (for '''NonProcedural Language''') was a [[relational database]] language developed by T.D. Truitt et al<ref name="Truitt83">"An Introduction to Nonprocedural Languages Using NPL", T.D. Truitt et al, McGraw-Hill 1983.''</ref><ref name="Truitt87">Truitt, T. D. "NPL: the nonprogrammer's data base language" Computer Language 4(06) June 1987 pp97-103</ref> in 1980 for [[Apple II]] and [[MS-DOS]].

Modern languages such as Visual Basic or Java are called non-procedural or event-driven, languages because instead of writing a series of sequential instructions, a programmer defines the actions that the program must perform when certain events occur.