4616 search results - page 854 / 924 » Beyond relational databases |
142
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CIKM
2006
Springer
15 years 10 months ago
2006
Springer
This paper revisits the analysis of annotation propagation from source databases to views defined in terms of conjunctive (SPJ) queries. Given a source database D, an SPJ query Q,...
166
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ECAI
1998
Springer
15 years 10 months ago
1998
Springer
Abstract. We extend different Description Logics by concrete domains (such as integers and reals) and by aggregation functions over these domains (such as min;max;count;sum), which...
172
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ER
2000
Springer
15 years 10 months ago
2000
Springer
Abstract E-commerce, web-based booking systems, and on-line auction systems are only a few examples that demonstrate how WWW sites are evolving from hypermedia information reposito...
154
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VLDB
2000
ACM
15 years 9 months ago
2000
ACM
Keyword indices, topic directories, and link-based rankings are used to search and structure the rapidly growing Web today. Surprisingly little use is made of years of browsing ex...
223
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ER
1995
Springer
15 years 9 months ago
1995
Springer
We describe a (meta) formalism for defining a variety of (object oriented) data models in a unified framework based on a variation of first-order logic. As specific example we use...