True/False
Indicate whether the
statement is true or false.
|
|
|
1.
|
Logical models show how a system is
implemented.
|
|
|
2.
|
Physical models show not only what a system is or
does, but also how the system is physically and technically implemented. They are implementation
independent because they specify the technology.
|
|
|
3.
|
A data flow diagram (DFD) is a tool that depicts
the flow of data through a system and the work or processing performed by that system.
|
|
|
4.
|
An entity relationship diagram (ERD) is a tool that
depicts the flow of data through a system and the work or processing performed by that
system.
|
|
|
5.
|
A process is work performed on, or in response to,
incoming data flows or conditions. A synonym is transform.
|
|
|
6.
|
If data modeling is done before process modeling,
the agents on the DFD can be pulled from the entity relationship diagram.
|
|
|
7.
|
The use of logical models reduces the risk of
missing business requirements.
|
|
|
8.
|
A hierarchy chart is another name for a
decomposition diagram.
|
|
|
9.
|
Each logical process must be implemented in
software.
|
|
|
10.
|
An event is triggered by a discrete input and is
completed when the process has responded with the appropriate outputs.
|
|
|
11.
|
An event is triggered by a discrete output that is
completed when the process has responded with the appropriate inputs.
|
|
|
12.
|
Elementary processes are the overall activities to
be accomplished by a system.
|
|
|
13.
|
A black hole is a process that has inputs but no
outputs.
|
|
|
14.
|
A gray hole is a process where the inputs are
insufficient to produce the desired outputs.
|
|
|
15.
|
A logical process can perform
computations.
|
|
|
16.
|
An iteration structure specifies that a set of
steps should be repeated based on some stated condition.
|
|
|
17.
|
A conditional structure specifies that a set of
steps should be repeated based on some stated condition.
|
|
|
18.
|
Spacing, blocking and indentation are not important
in Structured English since it is not a formal programming language.
|
|
|
19.
|
Simple condition steps can be translated into
programming language as a For loop.
|
|
|
20.
|
A policy is a set of rules that governs some
process in the business.
|
|
|
21.
|
The three components of a decision table are:
entities, relationships and attributes.
|
|
|
22.
|
A compound data flow is a data flow that consists
of other data flows.
|
|
|
23.
|
A control flow is a special data flow that has both
inputs and outputs.
|
|
|
24.
|
A data attribute is the smallest piece of data that
has meaning to the end users and the business.
|
|
|
25.
|
The domain of an attribute defines what class of
data can be stored in that attribute.
|
|
|
26.
|
A converging data flow is one that merges multiple
data flows into a single data flow.
|
|
|
27.
|
A synonym for external entity is data
entity.
|
|
|
28.
|
An enterprise process model typically identifies
business areas and functions in detail. Events and detailed processes are made
explicit.
|
|
|
29.
|
A system context diagram partitions the system into
logical subsystems.
|
|
|
30.
|
An event response list is compiled to partition the
system into logical subsystems and/or functions.
|
|
|
31.
|
A context data flow diagram defines the scope and
boundary for the system and project.
|
|
|
32.
|
Temporal events trigger processes on the basis of
time, or something that merely happens.
|
|
|
33.
|
State events trigger processes based on a
system's change from one state or condition to another.
|
|
|
34.
|
Use case analysis is the process of identifying the
actors who interact and use a system independent of how they are using the system.
|
|
|
35.
|
An event diagram is a composite diagram that
combines multiple events into a single processing unit.
|
|
|
36.
|
Data and process models represent different views
of the same system.
|
|
|
37.
|
Data models illustrate the essential work to be
performed by the system as a whole.
|
Multiple Choice
Identify the
choice that best completes the statement or answers the question.
|
|
|
38.
|
A model that shows what a system is and what is
does is:
a. | a physical model | b. | a logical model | c. | a context
model | d. | both a physical and logical
model | e. | none of these |
|
|
|
39.
|
A model that shows what a system is and what it
does, as well as how it does it, is:
a. | a physical model | b. | a logical model | c. | a context
model | d. | both a logical and physical
model | e. | none of these |
|
|
|
40.
|
A tool that depicts the flow of data through a
system and the work or processing performed by that system is known as:
a. | entity relationship diagrams | b. | decomposition, structure diagrams | c. | data flow diagrams | d. | use case
diagrams | e. | none of these |
|
|
|
41.
|
In data flow diagrams:
a. | processes are represented by rounded
rectangles | b. | data flows are
represented by arrows | c. | data stores are
represented by open-ended boxes | d. | external agents
are represented by squares | e. | all of
these |
|
|
|
42.
|
In data flow diagrams:
a. | processes are represented by
squares | b. | data flows are represented by open-ended
boxes | c. | data stores are represented by
arrows | d. | external agents are represented by rounded
rectangles | e. | none of
these |
|
|
|
43.
|
A process:
a. | is a common word used to describe almost any orderly
arrangement of ideas or constructs | b. | is work performed
on, or in response to, incoming data flows or conditions | c. | is only performed by computer software | d. | is comprised of many systems and subsystems | e. | none of these |
|
|
|
44.
|
A diagram that shows the system broken into its
component sybsystems:
a. | a data flow diagram | b. | an entity relationship diagram | c. | a decomposition diagram | d. | functional event
diagram | e. | none of these |
|
|
|
45.
|
A logical unit of work that must be completed as a
whole is known as:
a. | a function | b. | a data store | c. | an
event | d. | a trigger | e. | none of these |
|
|
|
46.
|
A process that has inputs but no outputs is known
as:
a. | a black hole | b. | a gray hole | c. | a
miracle | d. | both a miracle and a black
hole | e. | none of these |
|
|
|
47.
|
A process that has inputs insufficient to produce
the required outputs is known as:
a. | a black hole | b. | a gray hole | c. | a
miracle | d. | a miracle and a gray hole | e. | none of these |
|
|
|
48.
|
Structured English includes which of the following
as a construct:
a. | a sequence of simple declarative
sentences | b. | use of action verbs in the declarative sentences to
indicate the appropriate action for the sentence | c. | a conditional or decision structure | d. | a repetitive or iteration structure | e. | all of these |
|
|
|
49.
|
Which of the following is not a restriction of
Structured English?
a. | only passive verbs may be
used | b. | only names that have been defined in the project
dictionary may be used | c. | formulas must be
clearly stated using appropriate mathematical notations | d. | blocking and indentations must be used for
readability | e. | none of
these |
|
|
|
50.
|
A tabular form of presentation that specifies a set
of conditions and their corresponding actions is:
a. | a decomposition table | b. | a condition table | c. | a presentation
table | d. | a decision table | e. | none of these |
|
Completion
Complete each
statement.
|
|
|
51.
|
A(n) ______________________________________ is a
representation of reality.
|
|
|
52.
|
_______________________________ models show what a
system is or does, not how it does it. They are implementation independent.
|
|
|
53.
|
__________________________________ is the act of
breaking a system into component subsystems, processes and subprocesses.
|
|
|
54.
|
Another name for an elementary process is a
____________________________ process.
|
|
|
55.
|
A(n) _____________________ is a process that has
inputs but no outputs.
|
|
|
56.
|
A(n) __________________________________ structure
specifies that a process must perform different steps under well-specified conditions.
|
|
|
57.
|
A(n) _________________________ flow represents a
condition or non-data event that triggers a process.
|
|
|
58.
|
The ___________________ for an attribute defines
what class of data can be stored in that attribute.
|
|
|
59.
|
A(n) ____________________ data flow is one that
splits into multiple data flows.
|
|
|
60.
|
A(n) ________________________________ is compiled
to identify and confirm the business events to which the system must provide a
response.
|