Free Access Oracle.1Z0-888.v2022-08-02.q167 Practice Test (Page 35)

Consider:

Which statement best describes the meaning of the value for the key_lencolumn?

A.It shows how many columns in the index are examined.

B.It shows how many bytes will be used from each index row.

C.It shows the number of characters indexed in the key.

D.It shows the total size of the index row.

You have set innodb_stats_auto_recalc to OFF.
For tables using persistent statistics, what is the outcome of this change?

A.InnoDB no longer automatically updates index statistics after a CREATE TABLE statement.

B.InnoDB no longer automatically updates index statistics after the table structure is altered.

C.InnoDB no longer automatically updates index statistics after 10% of the rows in a table change.

D.InnoDB no longer automatically updates index statistics after an ANALYZE TABLE statement.

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