995 search results - page 123 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
114
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WEBDB
2004
Springer
15 years 8 months ago
2004
Springer
We consider the scenario where existing relational data is exported as XML. In this context, we look at the problem of translating XML queries into SQL. XML query languages have t...
126
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VLDB
2004
ACM
15 years 8 months ago
2004
ACM
The use of inaccurate or outdated database statistics by the query optimizer in a relational DBMS often results in a poor choice of query execution plans and hence unacceptably lo...
139
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SIGMOD
2004
ACM
16 years 3 months ago
2004
ACM
Spatial Database Management Systems (SDBMS), e.g., Geographical Information Systems, that manage spatial objects such as points, lines, and hyper-rectangles, often have very high ...
112
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BTW
2009
Springer
15 years 6 months ago
2009
Springer
Today, more and more enterprises process XML data, many of them already in XML database systems. Once systems start to grow in size, scalability becomes an issue. One of the core o...
125
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PODS
1999
ACM
15 years 7 months ago
1999
ACM
One of the most important types of query processing in spatial databases and geographic information systems is the spatial join, an operation that selects, from two relations, all...