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.
If you use your tongue to feel the top of your mouth, you will undoubtedly feel a difference in texture between the front side and the back. There is a horizontal bony plate in the front part of the roof of your mouth called the hard palate, which you will have felt to be hard.