995 search results - page 34 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
111
click to vote
DBISP2P
2004
Springer
15 years 7 months ago
2004
Springer
Peer-to-Peer infrastructures are emerging as one of the important data management infrastructures in the World Wide Web. So far, however, most work has focused on simple P2P networ...
113
Voted
ICDE
2010
IEEE
15 years 11 months ago
2010
IEEE
— Many applications require sorting a table over multiple sort orders: generation of multiple reports from a table, evaluation of a complex query that involves multiple instances...
155
click to vote
DBPL
1993
Springer
15 years 6 months ago
1993
Springer
In this paper we study the expressive power of query languages for nested bags. We de ne the ambient bag language by generalizing the constructs of the relational language of Brea...
118
click to vote
PEPM
2009
ACM
15 years 10 months ago
2009
ACM
Abstract. This paper presents techniques and tools to transform spreadsheets into relational databases and back. A set of data refinement rules is introduced to map a tabular data...
113
click to vote
IS
2008
15 years 1 months ago
2008
Consistent query answering is the problem of characterizing and computing the semantically correct answers to queries from a database that may not satisfy certain integrity constr...