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FQAS
2004
Springer
122views Database» more  FQAS 2004»
15 years 10 months ago
Simplification of Integrity Constraints with Aggregates and Arithmetic Built-Ins
In the context of relational as well as deductive databases, correct and efficient integrity checking is a crucial issue, as, without any guarantee of data consistency, the answers...
Davide Martinenghi
VLDB
2000
ACM
129views Database» more  VLDB 2000»
15 years 10 months ago
Offering a Precision-Performance Tradeoff for Aggregation Queries over Replicated Data
Strict consistency of replicated data is infeasible or not required by many distributed applications, so current systems often permit stale replication, in which cached copies of ...
Chris Olston, Jennifer Widom
CPAIOR
2009
Springer
16 years 1 months ago
Reformulating Global Grammar Constraints
An attractive mechanism to specify global constraints in rostering and other domains is via formal languages. For instance, the REGULAR and GRAMMAR constraints specify constraints ...
George Katsirelos, Nina Narodytska, Toby Walsh
DIAGRAMS
2004
Springer
15 years 10 months ago
Towards a Default Reading for Constraint Diagrams
Constraint diagrams are a diagrammatic notation which may be used to express logical constraints. They were designed to complement the Unified Modeling Language in the development ...
Andrew Fish, John Howse
TIME
1998
IEEE
15 years 10 months ago
Tackling the Qualification Problem using Fluent Dependency Constraints: Preliminary Report
The use of causal rules or fluent dependency constraints has proven to provide a versatile means of dealing with the ramification problem. In this paper we show how fluent depende...
Patrick Doherty, Jonas Kvarnström