QUIZ 2 Flashcards
Question 1
A data model is a what?
a) The abstract creating of an ideal system transformation
b)The model that is produced by extreme programming
c) The expanded, thoroughly balanced and normalized use case for a
system
d)A formal way of representing the data that are used and created by a
business system
d)A formal way of representing the data that are used and created by a
business system
Question 2
An entity relationship diagram (ERD):
a) Is a high-level CASE diagram of data modeling used in business systems
b)Is an illustration of external data flows to and from a business systems
c) Is a picture that shows the information that is created, stored, and used by a business system
d)Is a graphical display of the processes in a business system
c) Is a picture that shows the information that is created, stored, and used by a business system
Question 3
Which would NOT likely be an attribute of an entity called “Student”?
a)Age
b)Student identification number
c)Classroom number
d)Gender
c)Classroom number
Question 4
Which would NOT likely be an entity on a car insurance ERD?
a) Customer
b)Agent
c) Zip code
d)Car
c) Zip code
Question 5
An ERD is a picture which shows the information that is
________ by a business system.
a)created
b)stored
c)used
d)all of these
d)all of these
Question 6
You have entities of ITEM, SOLD-ITEM, SALE and PAYMENT.
Which most likely is NOT a relationship?
a) SALE is paid by PAYMENT
b)PAYMENT pays for ITEM
c) ITEM is included in SOLD-ITEM
d)PAYMENT pays for SALE
b)PAYMENT pays for ITEM
Question 7
The three major parts of an ERD diagram are what?
a) Process, data flow, data store
b)Attribute, modularity, cardinality
c) Relationship, attribute, entity
d)Process, entity and relationship
c) Relationship, attribute, entity
Question 8
A collection of data that is stored in some way (which is determined later when creating the physical model) in a DFD
is:
a)Data file
b)Datastore
c)Database
d)Data flow
b)Datastore
Question 9
Models that describe processes without suggesting how they are conducted.
a)Design models
b)Physical models
c)Physical process models
d)Logical process models
e)None of these
d)Logical process models
Question 10
The processes in the level 1 diagram are the _____ of the _____ process in the level 0 diagram.
a)Parent, Children
b)Children, Parent
c)Followers, Leaders
d)Balancers, Main
b)Children, Parent
