Database Normalization Concepts Quiz

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Questions and Answers

Which of the following is one of the objectives of the practice assignment?

To understand the concepts of first, second, and third normal form (1NF, 2NF, and 3NF)
To gain experience in normalizing relations to 3NF
To practice identifying and correcting anomalies in unnormalized relations (correct)
To create an entity-relationship diagram (ERD) for the normalized database

What is the main task in this practice assignment?

Identify the anomalies in the unnormalized relation
Normalize the unnormalized relation to 3NF (correct)
Create an entity-relationship diagram (ERD) for the normalized database
Write a written report

Which deliverable is NOT required for this practice assignment?

A written report (correct)
The normalized relations in tabular form
The ERD for the normalized database
A list of the anomalies identified in the unnormalized relation

What is the purpose of creating an entity-relationship diagram (ERD) for the normalized database?

To visualize the relationships between entities in the database (B) Signup and view all the answers

What is the deadline for the assignment?

07/11/2023 (B) Signup and view all the answers

What are the anomalies in the unnormalized relation?

The anomalies in the unnormalized relation include insertion anomalies, deletion anomalies, and update anomalies. Signup and view all the answers

What are the three normal forms (1NF, 2NF, and 3NF) and their concepts?

<ul> <li>First Normal Form (1NF): This form ensures that each column in a table contains only atomic values and there are no repeating groups.- Second Normal Form (2NF): This form eliminates partial dependencies by ensuring that each non-key attribute is fully dependent on the primary key.- Third Normal Form (3NF): This form eliminates transitive dependencies by ensuring that no non-key attribute is dependent on another non-key attribute.</li> </ul> Signup and view all the answers

What is the purpose of normalizing relations to 3NF?

The purpose of normalizing relations to 3NF is to eliminate anomalies and improve the efficiency and integrity of the database. Signup and view all the answers

What is the main task in normalizing the unnormalized relation to 3NF?

The main task in normalizing the unnormalized relation to 3NF is to identify and correct the anomalies by decomposing the relation into multiple smaller relations. Signup and view all the answers

Why is creating an entity-relationship diagram (ERD) important for the normalized database?

Creating an entity-relationship diagram (ERD) is important for the normalized database as it provides a graphical representation of the entities, their attributes, and the relationships between them, which helps in understanding the structure and design of the database. Signup and view all the answers

Study Notes

Database Normalization Assignment

The assignment is for the Faculty of Computing Science and Information Technology at Benazir Bhutto Shaheed University Lyari.
The objective is to practice identifying and correcting anomalies in unnormalized relations, understand 1NF, 2NF, and 3NF concepts, and normalize relations to 3NF.

Scenario and Tasks

A small company's database stores customer, order, and product information.
The database is currently unnormalized.
Tasks:
Identify anomalies in the unnormalized relation.
Normalize the unnormalized relation to 3NF.
Create an entity-relationship diagram (ERD) for the normalized database.

Deliverables

A written report including:
A list of anomalies identified in the unnormalized relation.
Normalized relations in tabular form.
The ERD for the normalized database.

Deadline and Marks

The assignment deadline is 07/11/2023.
The assignment is worth 05 marks.

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Description

Quiz: Database Normalization Concepts Test your knowledge of database normalization concepts with this quiz. Learn about identifying and correcting anomalies in unnormalized relations, as well as understanding the concepts of first, second, and third normal form (1NF, 2NF, and 3NF). Sharpen your skills in database systems with this interactive quiz.