*A PDB would have its SYSTEM, SYSAUX, TEMP tablespaces.It can also contains other user created tablespaces in it.
*Oracle Database creates both the SYSTEM and SYSAUX tablespaces as part of every database.
*tablespace_datafile_clauses
Use these clauses to specify attributes for all data files comprising the SYSTEM and SYSAUX tablespaces in the seed PDB.
Incorrect:
Not D:a PDB can not have an undo tablespace. Instead, it uses the undo tablespace belonging to the CDB.
Note:
* Example:
CONN pdb_admin@pdb1
SELECT tablespace_name FROM dba_tablespaces;
TABLESPACE_NAME
------------------------------
SYSTEM
SYSAUX
TEMP
USERS
SQL>