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Which three statements are true concerning unplugging a pluggable database (PDB)?（）
A:The PDB must be open in read only mode.
B:The PDB must be dosed.
C:The unplugged PDB becomes a non-cdb.
D:The unplugged PDB can be plugged into the same multitenant container database (CDB)
E:The unplugged PDB can be plugged into another cdb.
F:The PDB data files are automatically removed from disk.

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出自：Oracle认证

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