Database Systems Practice Test 252

Aggregate Functions Multiple Choice Questions (MCQ) PDF - 252

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The MCQ Quiz: Output of the query:
select avg (salary)
from instructor
where dept name='Comp. Sci.';
; "Aggregate Functions" App APK Download (Free) with answers salary of instructors in the computer science department., average salary of instructors in the computer science department., average salary in the computer science department. and maximum salary of instructors in the computer science department to learn distance learning courses. Study introduction to sql questions and answers, Apple Book to download free sample for online software development courses.

Aggregate Functions Questions and Answers PDF Download: Quiz 252

MCQ 1256: The output of the query:
select avg (salary)
from instructor
where dept name='Comp. Sci.';

A) Average salary of instructors in the Computer Science department.

B) Salary of instructors in the Computer Science department.

C) Average salary in the Computer Science department.

D) Maximum salary of instructors in the computer science department

MCQ 1257: A modification to the database expressed in terms of a view must be translated to a

A) Physical model of database

B) Logical model of database

C) View model of database

D) Virtual model of database

MCQ 1258: SQL provides a rich DDL that allows one to define

A) Tables

B) Integrity Constraints

C) Assertions

D) All of the Above

MCQ 1259: Multiples of rollup and cube operations can be used in a single

A) having by clause

B) Group by clause

C) select clause

D) define clause

MCQ 1260: To find logically implied functional dependencies, the types of rules to be followed are of type

A) 2 types

B) 3 types

C) 4 types

D) 5 types

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