The document discusses database normalization, detailing its importance in organizing data to eliminate redundancies and inconsistencies. It identifies different normal forms, including 1NF, 2NF, 3NF, and BCNF, each addressing specific aspects of data organization. Additionally, it poses questions related to the organization and potential problems of poorly structured databases.

1. DATABASE
NORMALIZATION
Prepared by:
Joshua F. Madera, LPT, MIT

2. REVIEW OF THE
PREVIOUS LESSON
Traditional DB VS Relational DB

3. PRELIMINARY
ACTIVITY

4. Guide Questions
1. How do you find the activity?
2. How did you arrange the blocks or what factors did
you considered in arranging/organizing the blocks?
3. Why it is important to arrange and organize
database?
4. What are the possible problems that you may
encounter if a database has redundancies and
anomalies?

5. Normalization
Normalization is the process of
organizing data in a database. It includes
creating tables and establishing relationships
between those tables according to rules
designed both to protect the data and to make
the database more flexible by eliminating
redundancy and inconsistent dependency.

6. Types of Normal Form
1. First Normal Form (1NF): Eliminate
duplicate columns from the same table
and create separate tables for
related data.

7. Types of Normal Form
2. Second Normal Form (2NF): Ensure
that all non-key attributes are fully
functional dependent on the primary
key.

8. Types of Normal Form
3. Third Normal Form (3NF): Ensure that all
attributes are not only fully functional
dependent on the primary key but also are non-
transitive.
4. Boyce-Codd Normal Form (BCNF): Handle
certain types of anomalies that 3NF does not
cover.

9. Reference
• https://learn.microsoft.com/en-us/office/troubleshoot/
access/database-normalization-description
.