143 search results - page 4 / 29 » Query Processing in the TAMBIS Bioinformatics Source Integra... |
SIGMOD
1995
ACM
13 years 8 months ago
1995
ACM
Text is a pervasive information type, and many applications require querying over text sources in addition to structured data. This paper studies the problem of query processing i...
ENTCS
2006
13 years 5 months ago
2006
Information sources in the World Wide Web usually offer two different schemes to their users, an Interface Schema which the user can query and a Result Schema which the user can b...
ICDE
2005
IEEE
13 years 11 months ago
2005
IEEE
Current federated systems deploy cost-based query optimization mechanisms; i.e., the optimizer selects a global query plan with the lowest cost to execute. Thus, cost functions in...
COOPIS
2003
IEEE
13 years 10 months ago
2003
IEEE
The use of semantic knowledge in its various forms has become an important aspect in managing data in database and information systems. In the form of integrity constraints, it ha...
SIGMOD
1999
ACM
13 years 9 months ago
1999
ACM
Query processing in data integration occurs over network-bound, autonomous data sources. This requires extensions to traditional optimization and execution techniques for three re...