【多选题】
A A PDB Lockdown profile can be created in an application root
B A PDB Lockdown profile can be created in a regular PDB
C A Lockdown profile created from a base Lockdown profile is never automatically modified if the profile on which it is based is modified
D A PDB Lockdown profile can be created in CDB$ROOT
E A Lockdown profile created from a base Lockdown profile is always automatically modified if the profile on which it is based is modified
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