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» Model Based Deduction for Database Schema Reasoning
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PODS
2003
ACM
114views Database» more  PODS 2003»
14 years 7 months ago
Soft stratification for magic set based query evaluation in deductive databases
In this paper we propose a new bottom-up query evaluation method for stratified deductive databases based on the Magic Set approach. As the Magic Sets rewriting may lead to unstra...
Andreas Behrend
ADBIS
2007
Springer
109views Database» more  ADBIS 2007»
13 years 11 months ago
A Fixpoint Approach to State Generation for Stratifiable Disjunctive Deductive Databases
In this paper we present a new fixpoint-based approach to bottom-up state generation for stratifiable disjunctive deductive databases. To this end, a new consequence operator based...
Andreas Behrend
ER
1993
Springer
163views Database» more  ER 1993»
13 years 11 months ago
Using Conceptual Graph Theory to Support Schema Integration
Two major problems in schema integration are to identify correspondences between different conceptual schemas and to verify that the proposed correspondences are consistent with th...
Paul Johannesson
ISMB
1994
13 years 9 months ago
Prototyping a Genetics Deductive Database
Weare developing a laboratory notebook system knownas the Genetics Deductive Database. Currently our prototype provides storage for biological facts andrules withflexible accessvi...
Catherine Hearne, Zhan Cui, Simon Parsons, Saki Ha...
ER
2004
Springer
119views Database» more  ER 2004»
14 years 1 months ago
Schema Evolution in Data Warehousing Environments - A Schema Transformation-Based Approach
Abstract. In heterogeneous data warehousing environments, autonomous data sources are integrated into a materialised integrated database. The schemas of the data sources and the in...
Hao Fan, Alexandra Poulovassilis