The Library is currently in the process of being upgraded from Oracle Database Version 18.104.22.168 to 22.214.171.124.
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.
Do you remember when mainframes were replaced by client-server? When
client-server was replaced by n-tier architecture? The "Cloud" is a
distraction ... DevOps is not. Prepare for the future.
A pragma is a compiler directive that tells Oracle to use rules, other than the default rules, for the object.
The following links are to library pages where there are demos of various Oracle pragma statements. Non-linked items are topics for further research.