179 search results - page 30 / 36 » Fixed-Point Query Languages for Linear Constraint Databases |
ER
1999
Springer
13 years 12 months ago
1999
Springer
Database support of time-varying phenomena typically assumes that entities change in a linear fashion. Many phenomena, however, change cyclically over time. Examples include monsoo...
PODS
2008
ACM
14 years 7 months ago
2008
ACM
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
CORR
2011
Springer
13 years 2 months ago
2011
Springer
Index tuning, i.e., selecting the indexes appropriate for a workload, is a crucial problem in database system tuning. In this paper, we solve index tuning for large problem instan...
ICDE
2007
IEEE
14 years 1 months ago
2007
IEEE
User-defined preferences allow personalized ranking of query results. A user provides a declarative specification of his/her preferences, and the system is expected to use that ...
ICDE
2002
IEEE
14 years 9 months ago
2002
IEEE
Besides being adopted as the new interchange format for the Internet, XML is finding increasing acceptance as a native data repository language. In order to make XML repositories ...