1933 search results - page 1 / 387 » Query Containment Using Views |
PODS
2003
ACM
14 years 5 months ago
2003
ACM
In this paper we consider general path constraints for semistructured databases. Our general constraints do not suffer from the limitations of the path constraints previously stud...
WAIM
2009
Springer
13 years 11 months ago
2009
Springer
Contained rewriting and maximal contained rewriting of tree pattern queries using views have been studied recently for the class of tree patterns involving /, //, and []. Given que...
SEBD
2003
13 years 6 months ago
2003
d abstract) Diego Calvanese1 , Giuseppe De Giacomo1 , Maurizio Lenzerini1 , Moshe Y. Vardi2 1 Universit`a di Roma “La Sapienza” Dip. di Informatica e Sistemistica via Salaria 1...
PVLDB
2010
13 years 3 months ago
2010
Virtual views are a mechanism that facilitates re-use and makes queries easier to express. However the use of iterative view definitions makes very simple query evaluation and an...
DEDUCTIVE
1994
13 years 6 months ago
1994
Given an intensional database (IDB) and an extension database (EDB), the view update problem translates updates on the IDB into updates on the EDB. One approach to the view update...