What is the use of an index?(a) Retrieve data more quickly and efficiently(b) Related data requires much less I/O overhead if accessed simultaneously(c) Simplify the user’s perception of data access(d) All of the MentionedI got this question in unit test.This intriguing question comes from Oracle Database 11g Architecture topic in chapter Oracle Database 11g Architecture Options of Oracle

What is the use of an index?(a) Retrieve data more quickly and efficie

1.	What is the use of an index?(a) Retrieve data more quickly and efficiently(b) Related data requires much less I/O overhead if accessed simultaneously(c) Simplify the user’s perception of data access(d) All of the MentionedI got this question in unit test.This intriguing question comes from Oracle Database 11g Architecture topic in chapter Oracle Database 11g Architecture Options of Oracle
Answer» The correct answer is (a) RETRIEVE data more quickly and efficiently To EXPLAIN I would say: Index is USED for to perform the QUICK operation on the data.

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