6654 search results - page 293 / 1331 » Querying Faceted Databases |
168
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DEXA
2010
Springer
15 years 6 months ago
2010
Springer
We consider the containment problem for conjunctive queries with atomic negation. Firstly, we refine an existing algorithm based on homomorphism checks, which itself improves other...
199
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APIN
2002
15 years 6 months ago
2002
We develop the scheme of indefinite constraint databases using first-order logic as our representation language. When this scheme is instantiated with temporal constraints, the res...
279
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Book
A set of presentations that cover the book, which includes several topics such as relational database systems such as Relational Databases, Database Design, Object-Based Databases ...
153
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WEBDB
2004
Springer
16 years 1 days ago
2004
Springer
We propose a new distributed, fault-tolerant peer-to-peer index structure called the P-tree. P-trees efficiently evaluate range queries in addition to equality queries.
248
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SIGMOD
2007
ACM
16 years 6 months ago
2007
ACM
Mashup Feeds is a system that supports integrated web service feeds as continuous queries. We introduce collectionbased stream processing semantics to enable information extractio...