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Query containment with negated IDB predicates (extended version)

Author
Teniente, E.; Farré, C.; Urpi, T.
Type of activity
Report
Date
2003-05
Code
LSI-03-22-R
Repository
http://hdl.handle.net/2117/97327 Open in new window
Abstract
We present a method that checks Query Containment for queries with negated IDB predicates. Existing methods either deal only with restricted cases of negation or do not check actually containment but uniform containment, which is a sufficient but not necessary condition for containment. Additionally, our queries may also contain equality, inequality and order comparisons. The generality of our approach allows our method to deal straightforwardly with query containment under constraints. O...
Citation
Teniente, E., Farre, C., Urpi, T. "Query containment with negated IDB predicates (extended version)". 2003.
Keywords
Databases, Negated IDB predicates, Query containment
Group of research
GESSI - Group of Software and Service Engineering
IMP - Information Modelling and Processing
inLab FIB

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