The catalog of ORACLE is a very large tabular variable that can be accessed
through several views defined on this table.
In ORACLE a list of the table owned by the current user is contained by
the view user catalog, also accessible through its synonym cat. A content of this
view is shown in Figure 5.24.
Information that describes space allocation and statistical properties can be
found in the view named USER TABLES, also named TABS. A description of
the attributes of tabular variables and of their domains can be found in the view
USER TAB COLUMNS also accessible as COLS. For example, the query: