
Relational Model
Quiz
•
Computers
•
University
•
Practice Problem
•
Medium
E H
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the relational data model, a relation is defined as:
A table with rows and columns
A collection of attributes only
A set of schemas
A physical data storage format
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following describes an attribute in a relational model?
A row in a table
A column in a table
A key constraint
A unique identifier for data
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A tuple in the context of a relational database refers to:
A set of tables
A single row in a table
The degree of a relation
The name of a relation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true about a domain?
It defines a permissible set of values for an attribute
It specifies the structure of the database
It ensures referential integrity
It contains multiple relations
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The term "instance" in the relational model refers to:
A permanent structure of a relation
A specific collection of data in a relation at a given time
The process of defining a relation
A constraint applied to a relation
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cardinality in a relational model is:
The number of attributes in a relation
The number of tuples in a relation
The number of foreign keys in a table
The degree of a relation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Degree in a relational model refers to:
The number of tuples in a relation
The number of attributes in a relation
The number of candidate keys in a relation
The number of primary keys in a table
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