单项选择题
You enabled Flashback Data Archive on the INVENTORY table. Which DDL operation is supported on the table after enabling Flashback Data Archive？（）
A. Drop the table.
B. Partition the table.
C. Truncate the table.
D. Add a column to the table.
E. Rename a column in the table.
相关考题
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多项选择题
WhichofthefollowinginformationwillbegatheredbytheSQLTestCaseBuilderfortheproblemspertainingtoSQL-relatedproblems？（）
A. ADR diagnostic files
B. all the optimizer statistics
C. initialization parameter settings
D. PL/SQL functions，procedures，and packages
E. the table and index definitions and actual data -
单项选择题
WhichtaskscanbeaccomplishedusingtheDBMS_LOB.SETOPTIONSprocedure？（）
A. only encryption and compression settings for all SecureFile LOBs
B. only encryption and deduplication settings for only SecureFile CLOBs
C. deduplication，encryption，and compression settings for all SecureFile LOBs
D. deduplication，encryption，and compression settings only for SecureFile CLOBs -
单项选择题
An index called ORD_CUSTNAME_IX has been created on the CUSTNAME column in the ORDERS table using the following command： SQL>CREATE INDEX ord_custname_ix ON orders（custname）； The ORDERS table is frequently queried using the CUSTNAME column in the WHERE clause. You want to check the impact on the performance of the queries if the index is not available. You do not want the index to be dropped or rebuilt to perform this test. Which is the most efficient method of performing this task？（）
A. disabling the index
B. making the index invisible
C. making the index unusable
D. using the MONITORING USAGE clause for the index
