1.
The DBMS acts as an interface between what two components of an enterprise-class database system?

4.
An application where only one user accesses the database at a given time is an example of a(n) ________ .

5.
An on-line commercial site such as Amazon.com is an example of a(n) ________ .

6.
Which of the following products was the first to implement true relational algebra in a PC DBMS?