Create PDBs - Oracle database 12C
Oracle allows you to have upto 256 pluggable database. Each can be created for different business segments. Each of the PDBs can be administered by different administrator.
With the concept of PDBs, Oracle has given a platform where multiple business segments can have their exclusive database sharing the same hardware resources and thus reduces the total cost on un-utilized infrastructure.
You can have different Admins managing various PDBs.
You can customize different storage for pluggable database.