describe the data dictionary,”the data dictionary is found in the Shared pool in the SGA. It is both in the data dictionary cache (row cache: holds data as rows instead of buffers) and in the library cache.It is a collection of database tables and views containing reference info about the database, its structures

describe the data dictionary,”the data dictionary is found in the Shared pool in the SGA. It is both in the data dictionary cache (row cache: holds data as rows instead of buffers) and in the library cache.It is a collection of database tables and views containing reference info about the database, its structures

and users”