Access path selection in a relational database management system
作者： P. Griffiths Selinger , M. M. Astrahan , D. D. Chamberlin , R. A. Lorie , T. G. Price
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摘要: In a high level query and data manipulation language such as SQL, requests are stated non-procedurally, without reference to access paths. This paper describes how System R chooses paths for both simple (single relation) complex queries (such joins), given user specification of desired boolean expression predicates. is an experimental database management system developed carry out research on the relational model data. was designed built by members IBM San Jose Research Laboratory.
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