Question

Consider the table Person with one of the attributes as Employment. What is the output of the
following query?
select * from Person where employment = null;
a. All the rows where the Employment is null.
b. The query is invalid.
c. No result
d. First row where the Employment is null
Answer
A
B
С
D
6​

Answer 1

Answer:

a

Explanation:

there is no specification that the employee may be null so it can be null it may display attributes where there is no data