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Search algorithms that use an index are referred to as _________(a) Index scans(b) Search scans(c) Primary scans(d) Equality scansI have been asked this question in final exam.The above asked question is from Query Processing in section Query Processing and Optimization of RDBMS

Answer»

The correct CHOICE is (a) INDEX scans

Easiest EXPLANATION: Search ALGORITHMS that use an index are called as index scans. We use the selection predicate to guide us through the choice of index to use in processing the QUERY.



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