Lab 6.2 Self-Review Questions

In order to test your progress, you should be able to answer the following questions.

1)	A CASE expression _____ returns a single value. _____ returns multiple values. _____ does not return values at all
2)	A CASE expression is terminated by _____ END CASE. _____ CASE. _____ END.
3)	A CASE expression never has a selector. _____ True _____ False
4)	When all conditions of a CASE expression evaluate to NULL, the expression _____ returns NULL if there is no ELSE clause present. _____ causes a syntax error if there is no ELSE clause present.
5)	A CASE expression may return a single datatype only. _____ True _____ False

Answers appear in Appendix A, Section 6.2 .