Searching for "Positive Relational Algebra." – sorted by Relevance.
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Fast and Simple Relational Processing of Uncertain Data
- partitioning. If we consider positive relational algebra extended by an operation for computing possible
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Query Planning in Infomaster
- system. Infomaster is the first such system that is able to handle arbitrary positive relational algebra
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Reconcilable differences
- mapping from predicate symbols to B-relations. We define the positive relational algebra (RA + ) on bag
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Annotated XML: Queries and Provenance
- .00. semantics for positive relational algebra (i.e., unions of conjunctive queries) and positive Datalog were
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CE CID EID
- possible world.Efficient Query Evaluation: Positive relational algebra Query evaluation under possible
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Structural Recursion as a Query Language
- in this section that, in fact, this is a tight correspondence: the project-join algebra, the positive relational
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World-set decompositions: Expressiveness and efficient algorithms
- form of strongness, namely for positive relational algebra, in conjunction with efficient query
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Conditioning Probabilistic Databases
- of positive relational algebra on such databases was described in that paper as well. Briefly, if U-relation
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An Overview of Parallel Strategies for Transitive Closure on Algebraic Machines
- Datalog programs into equations of positive Relational Algebra (RA+), and vice versa. Let us show
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On APIs for Probabilistic Databases
- is certain in the answer to a query. The heuristic involves positive relational algebra operators only, which
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