Explanation:* is used to select all values including null. 7. A Boolean data type that can take values true, false, and ________ .
A. 1
B. 0
C. Null
D. Unknown
Answer:A
Explanation:* is used to select all values including null. 7. A Boolean data type that can take values true, false, and ________ .
A. 1 B. 0 C. Null D. Unknown
Explanation: Unknown values do not take null value but it is not known.