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- 单项选择题 Note the following points describing various utilities in Oracle Database 11g： 1：It enables the high-speed transfer of data from one database to another. 2：It provides a complete solution for the backup， restoration， and recovery needs of the entire database. 3：It enables the loading of data from an external file into an Oracle database. 4：It provides a tape backup management for the Oracle ecosystem. Which point describes Oracle Secure Backup（）
A、1
B、2
C、3
D、4
E、1，2，and 4
F、1，2，3，and 4
- D
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