USER_DATA is a nonencrypted tablespace that contains a set of tables with data. You want to convert all existing data in the USER_DATA tablespace and the new data into the encrypted format.Which methodswould you use to achieve this?（）A. Use Data Pump to t

题目

USER_DATA is a nonencrypted tablespace that contains a set of tables with data. You want to convert all existing data in the USER_DATA tablespace and the new data into the encrypted format.Which methodswould you use to achieve this?（）

A. Use Data Pump to transfer the existing data to a new encrypted tablespace

B. Use ALTER TABLE MOVE to transfer the existing data to a new encrypted tablespace

C. Use CREATE TABLE AS SELECT to transfer the existing data to a new encrypted tablespace

D. Enable row movement for each table to be encrypted and then use ALTER TABLESPACE to encrypt the tablespace

E. Encrypt the USER_DATA tablespace using the ALTER TABLESPACE statement so that all the data in the tablespace is automatically encrypted

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参考答案和解析
参考答案：A, B, C
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    参考答案：B

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