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 main structures of the mouth include: 1  Lips â two mobile and muscular structures that form the entrance to the mouth. The lips mark the transition from skin to moist mucous membrane.  The vestibule â the space between the soft tissue (lips and cheeks), and the teeth and gums.