In the course relation the title field should throw an error in case of any missing title . The command to be added in title is
A. Unique
B. Not null
C. 0
D. Null
Answer:A
In the course relation the title field should throw an error in case of any missing title . The command to be added in title is
A. Unique B. Not null C. 0 D. Null
Explanation:By specifying not null the value cannot be left blank .