29 DBMS_DDL. This package provides access to some SQL data definition language (DDL) statements from stored procedures. It also provides special administration operations that are not available as Data Definition Language statements (DDLs).
Anatomy of the mouth. The mouth, consists of 2 regions, the vestibule and the oral cavity proper. The vestibule is the area between the teeth, lips and cheeks. The oral cavity is bounded at the sides and in front by the alveolar process (containing the teeth) and at the back by the isthmus of the fauces.
The upper portion of alimentary canal is mouth. It is bounded by lips and contains cheeks, gums, teeth, tongue and muscles. The teeth in the mouth chew and masticate the food. It increases the surface area of the food so that various enzymes can act on it more effectively.