
Business Analysis 2 - Data modelling
Authored by Vladimir Ryabov
Computers
University
Used 8+ times

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8 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
When should Business Analysts model information?
(Select all relevant answers)
To understand the information needs of the business
To define the solution requirements correctly
To plan and design the integration of enterprise applications
To design a database
2.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Select the data modelling notations.
IDEF0
IDEF1X
BPMN
Information Engineering
UML class diagrams
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the two statements is correct in relation to E-R diagrams?
M2M relationships are allowed
M2M relationships are not allowed
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Why are many-to-many (M2M) relationships recommended to be resolved?
(Select all relevant reasons)
They don't look nice on diagrams
Data models become complicated if these are not resolved
Relational databases can't accommodate M2M relationships
Many Business Analysts simply don't like M2M relationships
M2M relationships can hide some information, which can be useful for accurate modelling
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Why should redundant relationships in data models be avoided?
(Select the correct reason)
Data models can become needlessly complicated
Redundant relationships are simply not allowed
Many Business Analysts simply don't like them
Relational DBs can't accommodate them
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is a ternary relationship in data modelling?
A relationship between three entities
Three different relationships between a pair of entities
Three relationships logically combined into one
Three similar relationships between any pairs of entities
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ternary relationships are ...
(Continue the sentence with the correct statement)
Allowed in all data modelling notations
Not allowed in all data modelling notations
Allowed only in Chen's notation
Allowed only in Ellis-Barker's notation
Allowed only in Information Engineering notation
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