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On your Oracle 12c database, you Issue the following commands to create indexes SQL > CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customers_id, sales_rep_id) INVISIBLE; SQL> CREATE BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customers_id, sales_rep_id); Which two statement are correct?（）
- A、Both the indexes are created; however, only the ORD_COSTOMER index is visible.
- B、The optimizer evaluates index access from both the Indexes before deciding on which index to use for query execution plan.
- C、Only the ORD_CUSTOMER_IX1 index is created.
- D、Only the ORD_CUSTOMER_IX2 index is created.
- E、Both the indexes are updated when a new row is inserted, updated, or deleted In the orders table.
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更多 “ On your Oracle 12c database, you Issue the following commands to create indexes SQL CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customers_id, sales_rep_id) INVISIBLE; SQL CREATE BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customers_id, sales_rep_id); Which two statement are correct?（）A、Both the indexes are created; however, only the ORD_COSTOMER index is visible.B、The optimizer evaluates index access from both the Indexes before deciding on which index to use for query execution plan.C、Only the ORD_CUSTOMER_IX1 index is created.D、Only the ORD_CUSTOMER_IX2 index is created.E、Both the indexes are updated when a new row is inserted, updated, or deleted In the orders table.” 相关考题
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