298 search results - page 29 / 60 » Query Rewriting in DL-Lite_^(HN)_horn |
90
Voted
ACMSE
2005
ACM
15 years 4 months ago
2005
ACM
A simple extension to the relational model that permits metadata (more generally metaknowledge) to be stored and manipulated as first class data is proposed. The accompanying que...
111
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DAGSTUHL
1993
15 years 11 days ago
1993
Abstract. We present the hybrid query language HQL/EER for an Extended Entity-Relationship model. As its main characteristic, this language allows a user to freely mix graphical an...
167
Voted
SIGMOD
2009
ACM
15 years 11 months ago
2009
ACM
In this paper, we consider the problem of keyword query cleaning for structured databases from a probabilistic approach. Keyword query cleaning consists of rewriting the user quer...
101
Voted
PODS
2010
ACM
15 years 4 months ago
2010
ACM
Both semantic and type-based query optimization rely on the idea that queries often exhibit non-trivial rewritings if the state space of the database is restricted. Despite their ...
108
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ER
2010
Springer
14 years 9 months ago
2010
Springer
Traditional information search in which queries are posed against a known and rigid schema over a structured database is shifting towards a Web scenario in which exposed schemas ar...