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闪回数据库小实验
Which two operations can be performed on an external table? (Choose two.) A. Create a view on the table B. Create an index on the table C. Create a synonym on the table D. Add a v
Examine the following statement that is used to modify the primary key constraint on the SALES table: SQL> ALTER TABLE SALES MODIFY CONSTRAINT pk DISABLE VALIDATE; Which three statement
Which two statements are true about the Automatic Workload Repository (AWR)? (Choose two.) A. All AWR tables belong to the SYSTEM schema B. The AWR contains system wide tracing and logging i
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