Oracle's Data Dictionary
During the creation of the database, the Oracle Server creates additional physical objects in the datafiles and logical structures within the instance. These structures assist in the running of the database and the location of other structures.
These structures include a set of read-only tables and views that record and provide verification and other information about the database to which it belongs.
In the data dictionary there are base tables that store the description of the database and its components. These base tables are created behind the scenes automatically when you issue the CREATE DATABASE command (Oracle runs sql.bsq to create them). They are the first structures in any Oracle database. The Oracle Server ...
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