1482 search results - page 155 / 297 » An Algebra for XML Query |
124
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WWW
2007
ACM
16 years 4 months ago
2007
ACM
In XML databases, materializing queries and their results into views in a semantic cache can improve the performance of query evaluation by reducing computational complexity and I...
123
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WEBDB
2009
Springer
15 years 10 months ago
2009
Springer
The question whether a given set of views, defined by queries, can be used to answer another query, arises in several contexts such as query optimization, data integration and se...
125
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DEXA
2004
Springer
15 years 9 months ago
2004
Springer
Abstract. In relational database management systems indexes are used to accelerate specific queries. The selection of indexes is an important task when tuning a database which is ...
131
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DASFAA
2007
IEEE
15 years 8 months ago
2007
IEEE
In order to efficiently determine structural relationships among XML elements and to avoid re-labeling for updates, much research about labeling schemes has been conducted, recentl...
157
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ADBIS
2004
Springer
15 years 7 months ago
2004
Springer
Abstract. We present for the first-order theory of atomic Boolean algebras of sets with linear cardinality constraints a quantifier elimination algorithm. In the case of atomic Boo...