Match the following descriptions to their respective terms. Choose the best answer. Note that not all of the terms in the dop-down lists are used.

a)	Describes the structure of data, the relationships among the data, the operations that can be performed on the data.
b)	Enforce the integrity of the database.
c)	May create the database, as well as control user access to database objects.
d)	Structure or blueprint of the database.
e)	Language component that manipulates database structure.
f)	Remove unnecessary reduncancy.
g)	Cause by unnecessary redundancy.