Answer to Question #122298 in Databases | SQL | Oracle | MS Access for Maw

Question #122298
Purpose of an index
1
Expert's answer
2020-06-15T15:02:47-0400

A purpose of an index is to increase a performance of data search. The index has a structure which is optimized for search, for instance, a structure of a binary search tree, so the search by the index is quicker than the search by sequential iterating over the rows.


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