Understanding DBMS Concepts

Understanding DBMS Concepts

University

10 Qs

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Understanding DBMS Concepts

Understanding DBMS Concepts

Assessment

Quiz

Computers

University

Practice Problem

Medium

Created by

Santhosh Bala

Used 1+ times

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of database normalization?

To enhance security by restricting data access.

The purpose of database normalization is to minimize redundancy and dependency by organizing fields and table relationships.

To increase data duplication for faster access.

To simplify complex queries by merging tables.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Explain the first normal form (1NF).

First Normal Form (1NF) is a property of a relation in a relational database that ensures all columns contain atomic values and each row is unique.

First Normal Form (1NF) is only applicable to non-relational databases.

1NF requires that all columns can contain multiple values.

First Normal Form (1NF) allows duplicate rows in a table.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are functional dependencies in the context of normalization?

Functional dependencies are relationships that define how one attribute uniquely determines another attribute in a database.

Functional dependencies are only applicable to primary keys.

Functional dependencies describe the physical storage of data.

Functional dependencies are irrelevant in database design.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe the difference between 2NF and 3NF.

2NF focuses on eliminating duplicate data; 3NF focuses on data integrity.

2NF eliminates partial dependencies; 3NF eliminates transitive dependencies.

2NF requires all attributes to be dependent on the primary key; 3NF allows some dependencies.

2NF is concerned with normalization; 3NF is about denormalization.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a transaction in a database management system?

A transaction is a sequence of operations treated as a single unit of work in a database.

A transaction is a backup of the database.

A transaction is a type of database query.

A transaction is a method for deleting data from the database.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

List the ACID properties of transactions.

Atomicity, Consistency, Isolation, Durability

Atomicity, Consistency, Isolation, Availability

Atomicity, Consistency, Integrity, Durability

Atomicity, Consistency, Isolation, Reliability

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the commit operation in transaction management?

The commit operation rolls back a transaction to its initial state.

The commit operation is used to delete all changes made during a transaction.

The commit operation temporarily saves changes without making them permanent.

The commit operation finalizes a transaction, making all changes permanent and ensuring data integrity.

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