995 search results - page 46 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
132
Voted
BDA
1993
15 years 3 months ago
1993
We show how structured data stored in files can benefit from standard database technology and in particular be queried and updated using database languages. We introduce the notio...
110
Voted
ITNG
2006
IEEE
15 years 8 months ago
2006
IEEE
In this paper, still images are modeled by hierarchical tree structures and object relational graphs. These modeling concepts can be described naturally using XML schema. We intro...
115
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SEBD
1996
15 years 3 months ago
1996
Abstract. To select an optimal query evaluation strategy for a path query in an object-oriented database system one has to exploit the available index structures on the path. In a ...
133
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FOCS
1998
IEEE
15 years 6 months ago
1998
IEEE
This paper deals with the evaluation of acyclic Boolean conjunctive queries in relational databases. By well-known results of Yannakakis [1981], this problem is solvable in polynom...
125
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DAGSTUHL
2003
15 years 3 months ago
2003
In this chapter, we summarize the research on querying inconsistent databases we have been conducting over the last five years. The formal framework we have used is based on two c...