Open AccessInterrogating Date-Sensitive Files
Author(s) -
F. E. Randall
Publication year - 1974
Publication title -
the computer journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.319
H-Index - 64
eISSN - 1460-2067
pISSN - 0010-4620
DOI - 10.1093/comjnl/17.4.302
Subject(s) - snapshot (computer storage) , computer science , information retrieval , database , world wide web
PERL (Prism Information Retrieval Language) has been developed by the Civil Service Department to enable the retrieval of up-to-date information from files accumulating historical information together with current data. The traditional method of achieving this has been by keeping current state master files and retaining regular 'snapshot' files, to generate retrospective reports. This paper examines some of the development problems and highlights some novel features.
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