Titlebook: Kompetenzbasiertes Markenmanagement in Verlagsunternehmen; Ein explorativer Ans Cornelia Geißler Book 2009 Gabler Verlag | Springer Fachmed

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e final result is an L-augmentation of the universal relation scheme and a lossless, γ-acyclic 4NF database scheme for the L-augmented relation scheme..This method can be specialized, such that the number of relation schemes in the database scheme is linear in the number of original attributes.

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Cornelia Geißlers, where some data items may be accessed by several read and write steps in an arbitrary fashion, and those involving nested transactions. The main graph-theoretic properties used in these characterizations are a directed cutset matching property and graph contraction.

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BG homomorphisms are studied in Sect. 5.2. Section 5.3 concerns relational structures and relational databases. It is especially shown that two fundamental problems dealing with conjunctive, positive and non-recursive queries—the query evaluation problem and the query containment problem—are equiva

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