995 search results - page 114 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
144
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KDD
1995
ACM
15 years 9 months ago
1995
ACM
For semantic query optimization one needs detailed knowledgeabout the contents of the database. Traditional techniquesuse static knowledgeabout all possible states of the database...
216
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CISM
1993
15 years 10 months ago
1993
The weak instance model is a framework to consider the relations in a database as a whole, regardless of the way attributes are grouped in the individual relations. Queries and upd...
170
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SIGMOD
1996
ACM
15 years 10 months ago
1996
ACM
Object-Relational and Object-Oriented DBMSs allow users to invoke time-consuming ("expensive") methods in their queries. When queries containing these expensive methods a...
152
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APWEB
2004
Springer
15 years 11 months ago
2004
Springer
Abstract. Spatial data has now been used extensively in the Web environment, providing online customized maps and supporting map-based applications. The full potential of Web-based...
167
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SSD
2007
Springer
16 years 8 days ago
2007
Springer
Topological relationships between spatial objects are important for querying, reasoning, and indexing of data within spatial databases. These relationships are qualitative and resp...