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Example Case to 3NF Tables
Purpose
The COIS20025 textbook and assignments have numerous exercises that require you to
take a given case and generate a data design for the case. The data design will
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How to fill out example case to 3nf
How to fill out an example case to 3NF:
Identify the functional dependencies:
01
Analyze the given data and determine the relationships between attributes.
02
Identify the primary key(s) and any dependencies between non-key attributes.
Create tables for each entity:
01
Convert each entity and its attributes into separate tables.
02
Include the primary key(s) as the first attribute(s) in each table.
Eliminate partial dependencies:
01
Identify any attributes that are functionally dependent on only part of the primary key.
02
Move those attributes to a separate table, with the dependent attribute(s) and part of the primary key.
Remove transitive dependencies:
01
Identify any attributes that are functionally dependent on another non-key attribute.
02
Move those attributes to a separate table, with the dependent attribute(s) and the attribute they depend on.
Normalize the tables:
01
Check the resulting tables for any further functional dependencies.
02
If necessary, repeat steps 3 and 4 until all tables are in 3NF.
Who needs an example case to 3NF:
01
Database designers and administrators: They need to ensure that the database design follows normalization rules to eliminate redundancy and maintain data integrity.
02
Developers and programmers: They need to understand the structure of the database and how to interact with it effectively.
03
Data analysts and researchers: They need to work with structured data and perform analyses on it, relying on properly organized tables.
04
Students and learners: They need to study and understand the process of normalizing a database for academic or professional purposes.
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What is example case to 3nf?
Example case to 3nf refers to a case that is normalized up to the Third Normal Form (3NF) in database design.
Who is required to file example case to 3nf?
Database administrators or developers are typically responsible for filing example case to 3nf.
How to fill out example case to 3nf?
To fill out example case to 3nf, data needs to be organized into tables, with each table containing information about a specific entity or relationship.
What is the purpose of example case to 3nf?
The purpose of example case to 3nf is to reduce data redundancy and improve data integrity in a database.
What information must be reported on example case to 3nf?
Information such as table structures, attribute dependencies, and primary keys must be reported on example case to 3nf.
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