Oracle
1Z0-909 · Question #13
1Z0-909 Question #13: Real Exam Question with Answer & Explanation
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Performance
Question
Examine these statements which execute successfully: Which two changes will improve this query performance?
Exhibit
Options
- ACREATE INDEX 1X7 ON users (user_name) USING HASH;
- BCREATE INDEX 1X4 ON Locations (site_id, loc_shared);
- CCREATE INDEX IX1 ON locations (loc_shareci) ;
- DCREATE INDEX 1X6 ON users (user_name);
- ECREATE INDEX 1X3 ON locations <loc_site_id) ;
- FCREATE INDEX 1X2 ON locations (loc_mapping) USING HASH; fH
- GCREATE INDEX 1X5 ON users (loc_id);
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Topics
#index creation#query optimization#index types#syntax validation