Chapt.2 - Data Models
Quiz
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Computers
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University
•
Practice Problem
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Medium
Corneille NDJEUMOU
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15 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is data model?
Simple representations of complex real-world data structures
Abstraction of a real-world object or event
Process of creating a specific data model for a determined problem domain
Clearly defined area within the real-world environment, with a well-defined scope and boundaries
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Below are the reasons why the data model is important EXCEPT
Help in visualizing data
Provides a structure for data
Organizes data for various users
Increases the cost of data storage
Are a communication tool
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
An implementation-ready data model should contain?
Hint: Please tick more than one answer
A detailed description of the data structure
A set of enforceable rules
A data manipulation methodology
The number of items of the model
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which are the basic building block(s) for the data model?
Hint: Please tick more than one answer
Entity
Relationship
Cardinality
Constraint
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Written documentation is one of the source of Business Rules
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
As a general rule, ___ in a business rule will translate into ___ in the model, and ___ that associates the nouns will translate into a ___ among the entities.
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
It is difficult to represent M:N relationships in this data model.
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