True Or False

Question 16 :

DISTINCT and its counterpart, ALL, can be used more than once in a SELECT statement.


A). True
B). False
Answer : Option B

Question 17 :

The result of every SQL query is a table.


A). True
B). False
Answer : Option A

Question 18 :

COUNT(field_name) tallies only those rows that contain a value; it ignores all null values.


A). True
B). False
Answer : Option A

Question 19 :

SUM, AVG, MIN, and MAX can only be used with numeric columns.


A). True
B). False
Answer : Option B

Question 20 :

Most companies keep at least two versions of any database they are using.


A). True
B). False
Answer : Option A