VLDB
1991
ACM
14 years 3 months ago
1991
ACM
We explore the implications of supporting bags (i.e. multisets) in a data model and associated query language, and present some formal results concerned with the algebraic propert...
VLDB
1991
ACM
14 years 3 months ago
1991
ACM
We present a priority system which is particularly suited for production rules coupled to databases. In this system, there are default priorities between all rules and overriding ...
VLDB
1991
ACM
14 years 3 months ago
1991
ACM
Object-oriented data models are receiving wide attention since they provide expressive ionmechanismsto model naturally and directly both structural and behavioral aspectsof comple...
VLDB
1991
ACM
14 years 3 months ago
1991
ACM
This paper presentsa version model which handlesdatabaseschemachangesandwhich takesevolution into account. Its originality is in allowing the development of partial schema version...
SSD
1991
Springer
14 years 3 months ago
1991
Springer
SIGMOD
1991
ACM
14 years 3 months ago
1991
ACM
SIGMOD
1991
ACM
14 years 3 months ago
1991
ACM
This paper presents an architecture for a persistent object store in which multi-level storage is explicitly included. Traditionally, DBMSs have assumed that all accessible data r...
SIGMOD
1991
ACM
14 years 3 months ago
1991
ACM
In this paper, Dept. of Computer Science, University of Waterloo Waterloo, Ontario, Canada, N2L 3G1 we consider how to exploit multiple disks to improve the performance of B-tree ...
SIGMOD
1991
ACM
14 years 3 months ago
1991
ACM
SIGMOD
1991
ACM
14 years 3 months ago
1991
ACM
The view-object model provides a formal basis for representing and manipulating object-based views on relational databases. In this paper, we present a scheme for handling update ...