21. In SQL, which command(s) is(are) used to create a synonym for a schema object?

A. CREATE SCHEMA
B. CREATE SYNONYM
C. CREATE SAME
D. All of the above
E. None of the above

22. If you want your database to include methods, you should use a _____ database.

A. Network
B. Distributed
C. Hierarchical
D. Object-Oriented
E. None of the above

23. In SQL, which of the following is not a data Manipulation Language Commands?

A. DELETE
B. SELECT
C. UPDATE
D. CREATE
E. None of the above

24. Which of the following is not characteristic of a relational database model?

A. tables
B. treelike structure
C. complex logical relationships
D. records
E. None of the above

25. A computer file contains several records. What does each record contain?

A. Bytes
B. Words
C. Fields
D. Database
E. None of the above