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If an index entry appears for only some of the search key values in the file, it is called as ________

If an index entry appears for only some of the search key values in the file, it is called as ________ Correct Answer Sparse index

In a sparse index, an index entry appears for only some of the search key values. Sparse indices can be used only if the relation is stored in the sorted order of the search key i.e. if the index is a clustering index.

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