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Constraints DBMS Questions And Answers

Here you can find Constraints DBMS Questions and Answers.

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In this Constraints DBMS Questions and Answers section you can learn and practice Constraints DBMS Questions and Answers to improve your skills in order to face technical inerview conducted by organisations. By Practicing these interview questions, you can easily crack any Exams interview.

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Constraints DBMS Questions & Answers

1. To include integrity constraint in a existing relation use :

Constraints DBMS Questions & Answers

2. Which of the following is not a integrity constraint ?

Constraints DBMS Questions & Answers

3. Foreign key is the one in which the ________ of one relation is referenced in another relation.

Constraints DBMS Questions & Answers

4. Domain Constraints DBMS, functional dependency and referential integrity are special forms of _________.

Constraints DBMS Questions & Answers

5. Which of the following is the right syntax for assertion?

Constraints DBMS Questions & Answers

6. Data integrity Constraints DBMS are used to:

Constraints DBMS Questions & Answers

7. Which of the following can be addressed by enforcing a referential integrity constraint?

Constraints DBMS Questions & Answers

8. _____________, express the number of entities to which another entity can be associated via a relationship set.

Constraints DBMS Questions & Answers

9. An entity in A is associated with at most one entity in B, and an entity in B is associated with at most one entity in A.This is called as

Constraints DBMS Questions & Answers

10. An entity in A is associated with at most one entity in B. An entity in B, however, can be associated with any number (zero or more) of entities in A.

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Constraints - DBMS Questions and Answers

This is the DBMS questions and answers section on "Constraints" with explanation for various interview, competitive examination and entrance test. Solved examples with detailed answer description, explanation are given and it would be easy to understand. One should practice the arranged Constraints DBMS Questions to improve the logical skills which are needed for various interviews, entrance tests, and other competitive examinations. The presented Constraints DBMS Multiple Choice Questions in the online test can be answered by the contenders who are focusing on learning the Database Management System. All the beginners, freshers, engineering graduates or experienced IT professionals can take part in the Constraints DBMS Online Test. The provided questions in the Constraints DBMS Quiz will come up with the detailed explanation and solutions. So, the candidates can practice and learn the Constraints DBMS Questions and Answers without any delay form this article.



Constraints DBMS Questions - Constraints DBMS Quiz Details

Online Test Name Constraints
Exam Type Multiple Choice Questions
Category Computer Science Engineering Quiz
Number of Questions 17


The Constraints enforce limits to the data or type of data that can be inserted or updated or deleted from a table. The whole work of the constraints is to maintain the data integrity during an update/delete/insert into a table. Based on the concept of the Constraints we have arranged the Constraints DBMS Questions in the below quiz. Thus, all the applicants can take part in the Constraints DBMS Online Test to know the various type of questions and answers. In the above table, we have provided the data regarding Constraints DBMS Quiz. Hence, the students need to check all the information in a detailed manner and practice the questions in the Constraints DBMS Mock Test.



Constraints DBMS Multiple Choice Questions

Do you know about the Constraints in DBMS? The multiple choice questions regarding Constraints in DBMS are arranged in the below Constraints DBMS Quiz. The competitors who are eager to know about the Constraints can take part in the online test. Candidates can understand all the topics of the Constraints and can increase the skills in the topic by practicing the Constraints DBMS Online Test. We advice all the applicants can follow our web portal that is allindiaexams.in to practice and to partici[pate in more online tests and quizzes.

Constraints MCQ Quiz Answers with Solutions

All the applicants will search for the answers to the questions at the time of the preparation. So, we have provided the instant answers along with the explanation to the Constraints DBMS Questions. From this article, the candidates can know the solutions to all the questions. Hence, the aspirants need to prepare for the interviews and competitive test with the help of our homepage.


1. To include integrity constraint in a existing relation use :
  • A. Create table
  • B. Modify table
  • C. Alter table
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Answer & Explanation

Answer: Option C

Explanation:

Alter table

SYNTAX – alter table table-name add constraint , where constraint can be any constraint on the relation.

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2. Which of the following is not a integrity constraint ?
  • A. Not null
  • B. Positive
  • C. Unique
  • D. Check ‘predicate’
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Answer & Explanation

Answer: Option B

Explanation:

Positive

Positive is a value and not a constraint.

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3. Foreign key is the one in which the ________ of one relation is referenced in another relation.
  • A. Foreign key
  • B. Primary key
  • C. References
  • D. Check constraint
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Answer & Explanation

Answer: Option B

Explanation:

Primary key

The foreign-key declaration specifies that for each course tuple, the department name specified in the tuple must exist in the department relation.

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4. Domain constraints, functional dependency and referential integrity are special forms of _________.
  • A. Foreign key
  • B. Primary key
  • C. Assertion
  • D. Referential constraint
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Answer & Explanation

Answer: Option C

Explanation:

Assertion

An assertion is a predicate expressing a condition we wish the database to always satisfy.

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5. Which of the following is the right syntax for assertion?
  • A. Create assertion 'assertion-name' check 'predicate';
  • B. Create assertion check 'predicate' 'assertion-name';
  • C. Create assertions 'predicates';
  • D. All of the mentioned
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Answer & Explanation

Answer: Option A

Explanation:

Create assertion 'assertion-name' check 'predicate';

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