2859 search results - page 317 / 572 » Querying Complex Structured Databases |
279
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VLDB
2002
ACM
16 years 6 months ago
2002
ACM
: Purpose ? Tree pattern is at the core of XML queries. The tree patterns in XML queries typically contain redundancies, especially when broad integrity constraints (ICs) are prese...
207
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VLDB
2005
ACM
16 years 3 days ago
2005
ACM
Developing cost models for query optimization is significantly harder for XML queries than for traditional relational queries. The reason is that XML query operators are much mor...
166
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GEOINFO
2004
15 years 8 months ago
2004
: Nowadays, the database characteristics, such as the huge volume of data, the complexity of the queries, and even the data availability, can demand minutes or hours to process a q...
188
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ADHOC
2005
15 years 6 months ago
2005
While sensor networks are going to be deployed in diverse application specific contexts, one unifying view is to treat them essentially as distributed databases. The simplest mech...
152
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KRDB
1998
15 years 8 months ago
1998
Previous researchers note the problem for semantic optimisation of database queries caused by its production of a large number of semantically equivalent alternative queries, from...