Lecturer Computer Science Test 31 Online Preparation MCQs

Online Free Taleem is free online MCQ’s test related to Lecturer Computer Science. All the individuals who are going to appear in Lecturer Computer Science written test can attempt these tests in order to prepare for it in best possible way. Our tests of Lecturer of Computer Science include all the important questions and Past Paper of  Lecturer Computer Science, that have extremely high amount of chances for been included in the actual exam which make our test undoubtedly the best source of preparation.


There will be 25 multiple choice question in the test.
Answer of the questions will change randomly each time you start this test.
Practice this test at least 5 times if you want to secure High Marks.
At the End of the Test you can see your Test score and Rating.
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Test Instructions:-
Test Name Lecturer Computer Science 
Subject Computer Science Test 31
Test Type MCQs
Total Questions 25
Total Time 20 Minutes
Total Marks 100

You have 20 minutes to pass to the quiz.

PPSC Lecturer of Computer Science Test 31

1 / 25

A ................... is a pictorial depiction of the schema of a database that shows the relations in the database, their attributes, and primary keys and foreign keys:

2 / 25

Which one of the following cannot be taken as a primary key?

3 / 25

The .....................operator takes the results of two queries and returns only rows that appear in both result sets:

4 / 25

Which of the following is used to provide delete authorization to instructor?

5 / 25

Consider attributes ID, CITY and NAME. Which one of this can be considered as a super key?

6 / 25

Which of the following is a basic form of grant statement ?

7 / 25

In authorization graph if DBA provides authorization to u1 which inturn gives to u2 which of the following is correct?

8 / 25

........................integrity constraint requires that the values appearing in specified attributes of any tuple in the referencing relation also appear in specified attributes of at least one tuple in the referenced relation:

9 / 25

If we wish to grant a privilege and to allow the recipient to pass the privilege on to other users, we append the..........................clause to the appropriate grant command:

10 / 25

The......................operation allows the combining of two relations by merging pairs of tuples, one from each relation, into a single tuple:

11 / 25

The ................. is the one in which the primary key of one relation is used as a normal attribute in another relation:

12 / 25

The ................. provides a set of operations that take one or more relations as input and return a relation as an output:

13 / 25

The subset of super key is a candidate key under what condition?

14 / 25

The result which operation contains all pairs of tuples from the two relations, regardless of whether their attribute values match:

15 / 25

Which one of the following is a procedural language?

16 / 25

Student(ID, name, dept name, tot_cred) In this query which attribute form the primary key?

17 / 25

Using which language can a user request information from a database?

18 / 25

An attribute in a relation is a foreign key if the ............. key from one relation is used as an attribute in that relation:

19 / 25

Which of the following is true regarding views?

20 / 25

The relation with the attribute which is the primary key is referenced in another relation. The relation which has the attribute as primary key is called:

21 / 25

The most commonly used operation in relational algebra for projecting a set of tuple from a relation is:

22 / 25

.................is a property of the entire relation, rather than of the individual tuples in which each tuple is unique:

23 / 25

The database administrator who authorizes all the new users, modifies database and takes grants privilege is:

24 / 25

The ....................................operation performs a set union of two ―similarly structured‖ tables:

25 / 25

Which one of the following attribute can be taken as a primary key?

Your score is

The average score is 64%


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