According to your backup strategy， you performed an incremental level 0 backup of your database. Which statement regarding this backup is true？（）<br>A:The backup is similar to image copy.<br>B:The backup contains all used data blocks.<br>C:The backup contains only unused data blocks.<br>D:The backup contains all data blocks changed since the last incremental level 1 backup.

According to your backup strategy， you performed an incremental level 0 backup of your database. Which statement regarding this backup is true？（）
A:The backup is similar to image copy.
B:The backup contains all used data blocks.
C:The backup contains only unused data blocks.
D:The backup contains all data blocks changed since the last incremental level 1 backup.

出自：Oracle认证

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