Answered: If a column has high selectivity or…

If a column has high selectivity or cardinality, which index type is most appropriate?a. IOTb. B-treec. bitmapd. function-based index

Oracle 12c: SQL

3rd Edition

ISBN:9781305251038

Author:Joan Casteel

Publisher:Joan Casteel

Chapter6: Additional Database Objects

Section: Chapter Questions

Problem 10MC

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Concept explainers

SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.

Question

If a column has high selectivity or cardinality, which index type is most appropriate?
a. IOT
b. B-tree
c. bitmap
d. function-based index

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