PPSC FPSC KPPSC BPSC SPSC Lecturer Computer Science Test 51

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.
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Test Instructions:-
Test Name Lecturer Computer Science 
Subject Computer Science Test 51
Test Type MCQs
Total Questions 25
Total Time 20 Minutes
Total Marks 100

You have 20 minutes to pass to the quiz.

Lecturer Computer Science Online Test No. 51

1 / 25

What is an Instance of a Database?

2 / 25

What action does ⋈ operator perform in relational algebra:

3 / 25

The value of the data at a particular time is called as?

4 / 25

Which of the following is the time of temporal data that record when a fact was recorded in a database?

5 / 25

The data that have a time interval associated with them during which they are valid are called as........

6 / 25

What is a foreign key?

7 / 25

A special redo-only log record is written to the log, where V1 is the value being restored to data item Xj during the rollback. These log records are sometimes called:

8 / 25

To specify the foreign keys in relations referencing temporal data we need to specify......

9 / 25

Which of the following syntax of the basic query is correct?

10 / 25

Functional dependencies that have a time associated with them during which they are valid are called as.......

11 / 25

If database modifications occur while the transaction is still active, the transaction is said to use the ________technique.

12 / 25

If a transaction does not modify the database until it has committed, it is said to use the ________ technique.

13 / 25

What is the method of specifying a primary key in a schema description?

14 / 25

The actions which are played in the order while recording it is called __________ history.

15 / 25

Which of the following keywords is used beside the select clause to explicitly specify that duplicates are not removed?

16 / 25

In the _______ scheme, a transaction that wants to update the database first creates a complete copy of the database.

17 / 25

What does the ―x‖ operator do in relational algebra?

18 / 25

An attribute is a _________ in a relation.

19 / 25

The process of making a normalized schema unnormalized is called as.........

20 / 25

Choose the correct statement regarding superkeys:

21 / 25

.............using a log record sets the data item specified in the log record to the old value.

22 / 25

The ________ scheme uses a page table containing pointers to all pages; the page table itself and all updated pages are copied to a new location.

23 / 25

In the _______ phase, the system replays updates of all transactions by scanning the log forward from the last checkpoint.

24 / 25

The log is a sequence of _______, recording all the update activities in the database.

25 / 25

The current copy of the database is identified by a pointer, called __________, which is stored on disk.

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