© 1975 by British Computer Society
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Database consistency and the CODASYL DBTG proposals*
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1 Aberdeen University Computing Centre, 23 Sunnybank Road, Aberdeen, UK, 2 SCICON, Sanderson House, 49/57 Berners Street, London, UK
The general consistency requirement for a high performance database management system (DBMS) are stated. The CODASYL Database Task Group (DBTG) proposals are examined in the light of these requirements and are shown to be inadequate in terms of integrity safeguards, where too great a burden is placed upon the applications programmer, and in terms of support for concurrent run units, where the inherent performance constraints are likely to embarrass rapid response systems. Some revisions to the CODASYL DBTG proposals are put forward which would remove these inadequacies.
Received October 1973.
* This paper is intended as a contribution to the discussion on the development of the CODASYL DBTG proposals.
Aberdeen University Computing Centre, 12 Sunnybank Road, Aberdeen AB9 2UY.
¶ At the time the paper was written Dr. Hawley was employed by the North Eastern Regional Hospital Board(Scotland) on a grant from the Scottish Home and Health Department.
SCICON, Sanderson House, 49/57 Berners Street, London W1P 4AO.