Methods and apparatus for accesssing non-relational data files u

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364DIG1, 3642821, 3642824, 3642834, G06F 1540

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active

053794192

ABSTRACT:
A relational data access facility allows relation-type queries to access data stored in non-relational data files by converting relational queries into a set of common commands which are sent to data drivers to obtain the data specified by those queries. The facility uses metadata which describes the organization of the data in the non-relational files, and examines the expressions in the relational queries to formulate an access plan for the data. The plan is formulated to reduce cost and promote efficiency.

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