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On your Oracle 12c database, you Issue the following commands to create indexes<br /> SQL > CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customers_id, sales_rep_id) INVISIBLE;<br /> SQL> CREATE BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customers_id, sales_rep_id);<br /> 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.

更多“ On your Oracle 12c database, you Issue the following commands to create indexes<br /> SQL > CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customers_id, sales_rep_id) INVISIBLE;<br /> SQL> CREATE BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customers_id, sales_rep_id);<br /> Which two statement are correct?()”相关的问题
第4题

A、It succeeds with default settings if the EMPLOYEES table belonging to HR is already defined in the database.  B、It fails because no SQL *Loader data file location is specified.  C、It fails if the HR user does not have the CREATE ANY DIRECTORY privilege.  D、It fails because no SQL *Loader control file location is specified.  

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第6题

A、The ASM compatibility attribute controls the format of the disk group metadata.  B、RDBMS compatibility together with the database version determines whether a database Instance can mount the ASM disk group.  C、The RDBMS compatibility setting allows only databases set to the same version as the compatibility value, to mount the ASM disk group.  D、The ASM compatibility attribute determines some of the ASM features that may be used by the Oracle disk group.  E、The ADVM compatibility attribute determines the ACFS features that may be used by the Oracle 10g database.  

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