
Week 3 Quiz 3 DB Normalization
Authored by Nasser Hilla
Information Technology (IT)
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the process of mapping a high-level data model (like an ERD) into a logical data model (like a relational schema) called?
Normalization
Data Modeling
Relational Mapping
Data Translation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the First Normal Form (1NF), what must be true about the values in each cell of a table?
They must be non-atomic.
They must be repeating.
They must be single and atomic.
They must be null.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a relational schema, what is a primary key that is composed of a foreign key from a parent entity and a partial key from a weak entity?
Simple Key
Foreign Key
Primary Key
Composite Primary Key
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the database concept that eliminates repeating groups and ensures that each cell contains only one value?
Third Normal Form (3NF)
First Normal Form (1NF)
Second Normal Form (2NF)
Fourth Normal Form (4NF)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is a One-to-Many (1:M) relationship from an ERD converted into a relational schema?
The primary key of the 'many' side is placed as a foreign key in the 'one' side's table.
A new table is created to link the two entities.
The primary key of the 'one' side is placed as a foreign key in the 'many' side's table.
The tables are merged into a single table.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When converting a Many-to-Many (M:N) relationship from an ERD to a relational schema, what is the most common approach?
Placing the primary key of one entity as a foreign key in the other entity's table.
Creating a single table for both entities.
Creating an intermediate table whose primary key is the combination of the primary keys of the participating entities.
Adding a new attribute to both entities.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a key rule for a table to be in the First Normal Form (1NF)?
The table must have a primary key.
The table must have no transitive dependencies.
The table must have repeating groups of columns.
The table must have multi-valued attributes.
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