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Database Normalization: Converting to 1NF

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Database Normalization: Converting to 1NF

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Questions and Answers

What is the primary characteristic of a table in 2NF?

It is in 1NF and has multiple candidate keys
It is in 1NF and has a single primary key
It has no transitive dependencies
It has no partial dependencies (correct)

What is the purpose of Step 1 in the conversion to 3NF?

To reassign corresponding dependent attributes
To eliminate partial dependencies
To identify transitive dependencies
To create new tables to eliminate transitive dependencies (correct)

What is a determinant in the context of converting to 3NF?

An attribute that is dependent on another attribute
A candidate key in a table
A primary key in a table
An attribute whose value determines other values within a row (correct)

What is the difference between a primary key and a candidate key?

A primary key is always chosen, while a candidate key is not (A) Signup and view all the answers

What is the purpose of Step 2 in the conversion to 3NF?

To reassign corresponding dependent attributes to the new tables (C) Signup and view all the answers

What is the characteristic of a table in 3NF?

It is in 2NF and has no transitive dependencies (B) Signup and view all the answers

What is the Boyce-Codd Normal Form?

A normal form where every determinant in a table is a candidate key (B) Signup and view all the answers

Why are higher-level normal forms not always used in business transactional databases?

Because they are not necessary for most business transactions (C) Signup and view all the answers

What is the purpose of identifying dependencies in a database?

To identify the relationships between attributes (D) Signup and view all the answers

What is a transitive dependency in a database?

A dependency between an attribute and another attribute that is dependent on the primary key (A) Signup and view all the answers