995 search results - page 112 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
145
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RTSS
2006
IEEE
16 years 4 days ago
2006
IEEE
A real-time database is composed of real-time objects whose values remain valid only within their validity intervals. Each object in the database models a real world entity. The f...
278
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ICDE
2008
IEEE
16 years 7 months ago
2008
IEEE
Data sources on the web are often accessible through web interfaces that present them as relational tables, but require certain attributes to be mandatorily selected, e.g., via a w...
201
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CORR
2011
Springer
15 years 1 months ago
2011
Springer
Abstract. We present a categorical denotational semantics for a database mapping, based on views, in the most general framework of a database integration/exchange. Developed databa...
201
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EDBT
2012
ACM
13 years 8 months ago
2012
ACM
Query optimization in RDF Stores is a challenging problem as SPARQL queries typically contain many more joins than equivalent relational plans, and hence lead to a large join orde...
167
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ICEBE
2005
IEEE
15 years 11 months ago
2005
IEEE
Electronic commerce is emerging as a major application area for database systems. A large number of e-commerce stores provide electronic product catalogs that allow customers to s...