Entity Relationship Diagram (ERD)

Quiz
•
Computers
•
University
•
Medium
CIK FERESA MOHD FOOZY
Used 270+ times
FREE Resource
7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An entity relationship diagram (ERD)_________.
Is a use-case diagram enhanced graphically to show data and process modeling
Is a high-level CASE diagram of data modeling used in business systems
Is an illustration of external data flows to and from a business systems
Is a picture that shows the information that is created, stored, and used by a business system
Is a graphical display of the processes in a business system
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A data model is a ______________.
The mathematical model of formulas and logic used in a system
The abstract creating of an ideal system transformation
The model that is produced by extreme programming
The expanded, thoroughly balanced and normalized use case for a system
A formal way of representing the data that are used and created by a business system
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
On an ERD _________________:
Processes are listed alphabetically with relationship connections drawn between processes
Data elements are listed alphabetically with a cross listing to the processes that manipulate them
Data elements are described as singular (1:1); plurals (1:N); or didactic (M:N)
Data elements are grouped in a hierarchical structure that is uniquely identified by number
Data elements are listed together and place inside boxes called entities
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An entity ____________.
Is the association between two related processes
Has cardinality (1:1, 1:N, or M:N)
Shows if it can be null or no null
Is a person, place or thing
Is described with a verb phrase
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which would NOT likely be an attribute of an entity called “Student”?
Age
Student identification number
Class room number
Home phone
Gender
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lines on an ERD diagram indicate____________.
Hierarchies between processes
Relationships among the data
Plurality of data items
Uniqueness of data items
Primary keys
7.
OPEN ENDED QUESTION
30 sec • 1 pt
The 4 major parts of an ERD diagram are___________.
Evaluate responses using AI:
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