710 search results - page 35 / 142 » Relational Expressive Power of Constraint Query Languages |
ICDE
1996
IEEE
14 years 9 months ago
1996
IEEE
This paper describes a method to cope with denormalized relational schemas in a database reverse engineering process. We propose two main steps to irnprove the understanding of da...
EDBT
2009
ACM
13 years 11 months ago
2009
ACM
The classic Generalized Sequential Patterns (GSP) algorithm returns all frequent sequences present in a database. However, usually a few ones are interesting from a user's po...
DBPL
2007
Springer
14 years 1 months ago
2007
Springer
Martens et al. defined a pattern-based specification language equivalent in expressive power to the widely adopted XML Schema definitions (XSDs). This language consists of rules...
VLDB
1998
ACM
13 years 12 months ago
1998
ACM
We propose a multi-dimensional language called nD-SQL with the following features: (i) nD-SQL supports queries that interoperate amongst multiple relational sources with heterogen...
ICIAP
1997
ACM
13 years 12 months ago
1997
ACM
We present a model for image retrieval in which images are represented both at the form level, as sets of physical features of the representing objects, and at the content level, a...