39 search results - page 5 / 8 » vldb 1989 |
VLDB
1989
ACM
15 years 1 months ago
1989
ACM
An Event-Join combinestemporaljoin and outerjoin properties into a single operation. It is mostly used to group temporal attributes of an entity into a single relation. In this pa...
VLDB
1989
ACM
15 years 1 months ago
1989
ACM
In this paper, we introduce Quasi Serializability, a correctness criterion for concurrency control in heterogeneous distributed database environments. A global history is quasi se...
63
Voted
VLDB
1989
ACM
15 years 1 months ago
1989
ACM
We present a framework for the estimation of the size of binary recursively defined relations. We show how the framework can be used to provide estimating algo rithms for the size...
VLDB
1989
ACM
15 years 1 months ago
1989
ACM
The derived data update problem involves the transformation of modifications of derived facts into corresponding changes to base facts and other derived facts. Using a database sc...
VLDB
1989
ACM
15 years 1 months ago
1989
ACM
Deductive conceptualmodels(DCMs) aim at providing a complete specification of information systems,expressing only its logic component.It hasbeenshownthatDCMs have some advantagesw...