Titlebook: V(D)J Recombination; Pierre Ferrier Book 2009 The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Science

疼死我了

Yun Liu,Li Zhang,Stephen DesiderioThe problem of rewriting queries using views is closely related to the problem of checking for query containment or equivalence. For most classes of problems, containment tests enable simple algorithms to rewrite queries using views. Rewriting queries is one of the techniques that is most often used to answer queries using views.

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