Abstract
Updates are important database operations,
but there has not yet been a uniform logical framework that accounts
for them. This paper presents an approach to deal with updates in the
deductive and object-oriented database setting. It incorporates
temporal information into update rules, so that different versions of
objects may be created at different time points and can be identified
by the temporal information. The proposed update language has a
simple and clear Herbrand-like declarative semantics, which can be
computed by a bottom-up evaluation using a temporal stratification.
Notes
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