DBC CHAPTER 3 - REVISION
Authored by Marliana (AS)
Computers
University
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What does the relational data model allow the designer to focus on?
Logical representation of data
Physical storage details
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the primary purpose of keys in the relational model?
To ensure each row is uniquely identifiable
To eliminate redundancy
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What does the data dictionary contain?
Metadata
User access logs
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which relationship type is considered the norm in relational database design?
M:N relationship
1:M relationship
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is a composite entity used for in a relational database?
To create primary keys
To link tables in an M:N relationship
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the role of foreign keys in controlling data redundancy?
They eliminate redundancy completely
They minimize data redundancies
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the main function of an index in a relational database?
To logically access rows in a table
To enforce integrity rules
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