The predicate in a where clause can involve Boolean operations such as and. The result of true and unknown is_______ false and unknown is _____ while unknown and unknown is _____
A. Unknown, unknown, false
B. True, false, unknown
C. True, unknown, unknown
D. Unknown, false, unknown
Answer:D
The predicate in a where clause can involve Boolean operations such as and. The result of true and unknown is_______ false and unknown is _____ while unknown and unknown is _____
A. Unknown, unknown, false B. True, false, unknown C. True, unknown, unknown D. Unknown, false, unknown