The Library is currently in the process of being upgraded from Oracle Database Version 188.8.131.52 to
184.108.40.206. Demos are being upgraded to reflect the new Container paradigm as well as EBR (Edition Based Redefinition) and may contain
references to CDBs, PDBs, and other objects you may not be familiar with such as CDB_OBJECTS_AE: Welcome to 12c.
Contains specs. for packages and types used in DBMS extensibility infrastructure (Indexing, optimizer etc.). Not built by the default installation.