Which two statements about multitenant architecture are true?
A. Multiple PDBs on a single server need multiple database instances and multiple sets of database files.
B. Although consolidated into a single physical database, PDBs mimic the behavior of non-CDBs.
C. A PDB administrator can use Oracle Flashback or point-in-time recovery to retrieve lost data from a PDB, only by shutting down all the PDBs from the CDB.
D. It is easier to collect performance metrics for many databases in a CDB than individual non-CDB databases.
E. It takes more time to apply a patch to one CDB that holds hundreds of PDBs than to hundreds of non-CDB databases.
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