687 search results - page 8 / 138 » Query Transformation for PSJ-Queries |
AMAI
2007
Springer
14 years 10 months ago
2007
Springer
We present here a formal foundation for an iterative and incremental approach to constructing and evaluating preference queries. Our main focus is query modification: a query tran...
107
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DATESO
2009
14 years 7 months ago
2009
Ontology as a knowledge base can provide different reasoning tasks, e.g. to check consistency of the ontology or to check whether a resource is instance of a concept or not. In thi...
COOPIS
1994
IEEE
15 years 2 months ago
1994
IEEE
In this paper, we present a query translation algorithm which allows object-oriented queries to be automatically translated into a relational query language. Our goal is to provid...
103
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VLDB
1995
ACM
15 years 1 months ago
1995
ACM
Efficient processing of aggregation queries is essential for decision support applications. This paper describes a class of query transformations, called eager aggregation and lat...
PPDP
2010
Springer
14 years 7 months ago
2010
Springer
Given a set of Datalog rules, facts, and a query, answers to the query can be inferred bottom-up starting with the facts or top-down starting with the query. For efficiently answe...