Database Systems MCQs - Chapter 15

Introduction to SQL Trivia Questions and Answers PDF - 8

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Introduction to SQL Questions & Answers PDF Download: MCQ Quiz 8

MCQ 36: The command to delete the relation is

Delete from *example*
Delete about *example*
Abort from *example*
Abort about *example*

MCQ 37: We define an SQL relation by using the command

create table
define table
namespace
name table

MCQ 38: The number of error(s) in the following query is/are:
select avg (salary)
from instructor;
where dept name=Comp. Sci.

MCQ 39: The aggregate operations, when an empty collection is applied on the function, return a

0
1
Undefined value
Null value

MCQ 40: The result relation has all attributes from all the relations in the

Select clause
IN clause
From clause
Define clause

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