629 search results - page 49 / 126 » Integrating Unstructured Data into Relational Databases |
WWW
2007
ACM
15 years 10 months ago
2007
ACM
Design principles for XML schemas that eliminate redundancies and avoid update anomalies have been studied recently. Several normal forms, generalizing those for relational databa...
CCS
2007
ACM
15 years 3 months ago
2007
ACM
In this paper, we study the maintenance of role-based access control (RBAC) models in database environments using transitive closure relations. In particular, the algorithms that ...
COOPIS
2003
IEEE
15 years 3 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...
DBPL
1997
Springer
15 years 1 months ago
1997
Springer
Abstract. In the context of the object-oriented data model, a compiletime approach is given that provides for a significant reduction of the amount of run-time transaction overhead...
IJIIDS
2010
14 years 4 months ago
2010
Abstract. This paper presents the semantics of database mappings in the relational database (DB) category, based on the power-view monad T and monadic algebras. The semantics can b...