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Mastering Integrity Constraints in Database Management Systems - Quiz

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Mastering Integrity Constraints in Database Management Systems - Quiz

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Questions and Answers

Which type of integrity constraint ensures that the overall validity, integrity, and consistency of the data present in the database table is maintained?

Referential Integrity Constraint

Key Constraints

Domain Integrity Constraint (correct)

Entity Integrity Constraint

What is the purpose of integrity constraints in a Database Management System (DBMS)?

To restrict the kind of attributes or values a column or relation can hold

To prevent accidental damage to the database by an authorized user

To impose rules on the table or attributes of a table

To ensure overall validity, integrity, and consistency of the data (correct)

Which type of integrity constraint specifies that a particular column can hold null values?

Domain Integrity Constraint (correct)

Referential Integrity Constraint

Key Constraints

Entity Integrity Constraint

What happens when an integrity constraint comes out to be False?

<p>The data is rejected and not allowed to be inserted, updated, deleted, or altered</p> Signup and view all the answers

What is the purpose of a referential integrity constraint?

<p>To enforce relationships between tables</p> Signup and view all the answers

Study Notes

Integrity Constraints in Database Management Systems (DBMS)

Integrity constraints are rules that ensure data validity, integrity, and consistency in a database table. They serve to prevent invalid data entry and maintain the quality of data.

Types of Integrity Constraints

Domain Integrity Constraint: Defines valid values for a column, ensuring data entered matches a specified format, type, or range.
Null Integrity Constraint: Specifies whether a particular column can accept null values, helping maintain data completeness.

Consequences of Integrity Constraints

When an integrity constraint evaluates to false, it indicates a violation of the defined rules; this could lead to rejection of the entry, error messages, or enforcement of corrective measures depending on the DBMS configuration.

Referential Integrity Constraint

This constraint ensures relationships between tables remain consistent by enforcing that a foreign key in one table must match a primary key in another, maintaining the integrity of references across the database.

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Description

Test your knowledge on integrity constraints in Database Management Systems (DBMS) with this quiz. Learn about the rules and regulations that ensure the validity, integrity, and consistency of data in a database table.