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124
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IDEAS
2009
IEEE
15 years 10 months ago
2009
IEEE
This paper is concerned with a transformation-based approach to update propagation in an extended version of Codd’s relational algebra which allows for defining derived relatio...
237
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ICDT
2011
ACM
14 years 6 months ago
2011
ACM
Distributed data management systems consist of peers that store, exchange and process data in order to collaboratively achieve a common goal, such as evaluate some query. We study...
124
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EDBT
2010
ACM
15 years 6 months ago
2010
ACM
As the use of derived information has grown in recent years, the importance of provenance has been recognized, and there has been a great deal of effort devoted to developing tec...
98
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DEXA
2005
Springer
15 years 9 months ago
2005
Springer
Abstract. Database integrity constraints, understood as logical conditions that must hold for any database state, are not fully supported by current database technology. It is typi...
153
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ICDT
2012
ACM
13 years 5 months ago
2012
ACM
We introduce a representation system for relational data based on algebraic factorisation using distributivity of product over union and commutativity of product and union. We giv...