How to provision pluggable databases in19c

There are four methods to provision pluggable databases:

• Create a new PDB from PDB$SEED pluggable database: for example, for a brand new
application implementation.
• Create a new PDB from a non-CDB: plug the non-CDBs in a CDB as PDBs, as part of
migration strategy. It is also a good way to consolidate the non-CDBs into a CDB.
• Clone a PDB from another PDB into the same or another CDB: an example of this
method is application testing.
• Plug an unplugged PDB into a CDB, for example, instead of upgrading a multitenant
container database from one release to another, you can unplug a pluggable database
from one Oracle Database release, and then plug it in to a newly created multitenant
container database from a higher release.