Oracle
1Z0-117 · Question #7
1Z0-117 Question #7: Real Exam Question with Answer & Explanation
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Question
Examine the Exhibit to view the structure of an indexes for the SALES table. The SALES table has 4594215 rows. The CUST_ID column has 2079 distinct values. What would you do to influence the optimizer for better selectivity?
Exhibit
Options
- ADrop bitmap index and create balanced B*Tree index on the CUST_ID column.
- BCreate a height-balanced histogram for the CUST_ID column.
- CGather statistics for the indexes on the SALES table.
- DUse the ALL_ROWS hint in the query.
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