
Relational Database Model Quiz
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Information Technology (IT)
University
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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relational model based on?
Predicate logic and set theory
Only set theory
Only predicate logic
None of the above
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a table (relation) represent?
A one-dimensional structure
A two-dimensional structure
A three-dimensional structure
None of the above
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a primary key?
A key that can contain null entries
A candidate key selected to uniquely identify all other attribute values
A superkey without any unnecessary attributes
None of the above
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is functional dependence?
The value of one or more attributes determines the value of one or more other attributes
The state in which knowing the value of an attribute makes it possible to determine the value of another
Both A and B
None of the above
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of integrity rules?
To maintain a good database design
To ensure all data is consistent
Both A and B
None of the above
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an example of a foreign key?
STU_NUM
STU_SECT
STU_LNAME
STU_FNAME
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does entity integrity ensure?
Each row in a table has its own unique identity
All primary key entries are unique
Both A and B
None of the above
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