4397 search results - page 291 / 880 » Relational Algebra Operations |
139
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PODS
2010
ACM
15 years 9 months ago
2010
ACM
This paper approaches the incremental view maintenance problem from an algebraic perspective. We construct a ring of databases and use it as the foundation of the design of a quer...
121
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IEAAIE
2001
Springer
15 years 9 months ago
2001
Springer
Abstract. This paper presents AROM, a new object-based knowledge representation system. AROM is original in two ways. Firstly, in addition to classes, knowledge representation in A...
144
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SIBGRAPI
1999
IEEE
15 years 9 months ago
1999
IEEE
Abstract. Mathematical morphology has become a widely used technique for image processing and computer vision. Initially designed as a set theory, it was generalized to the set of ...
126
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AGP
1993
IEEE
15 years 8 months ago
1993
IEEE
In this paper, we present an account of classical Logic Programming fixed-point semantics in terms of two standard categorical constructions in which the least Herbrand model is ...
176
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ER
1992
Springer
15 years 8 months ago
1992
Springer
In this paper, we address the problem of supporting more exibility on the schema of object-oriented databases. We describe a general framework based on an object-oriented data mode...