Deck 16: The Traditional Approach to Requirements

Question 1

​Context diagrams do not usually show data stores.

Answer 1

True

Question 2

​If the data flow diagram (DFD)is a ____,then it assumes that the system will be implemented with perfect technology.

A)context diagram
B)​logical model
C)physical model
D)prototype model

Answer 2

C

Question 3

​The term diagram 0 is another name for a(n)____.

A)context diagram
B)​DFD fragment
C)event-partitioned system model
D)​lowest level diagram

Answer 3

C

Question 4

​Which of the following data flow diagram (DFD)symbols represents the communication between an external agent and a process while the process is executing?

A)Process
B)Data link
C)​Real-time link
D)​Data store

Question 5

​A(n)____ is a data flow diagram (DFD)that summarizes all processing activity within the system in a single process symbol.

A)Event partition diagram
B)​level of abstraction
C)​Diagram 0
D)​context diagram

Question 6

Which of the following data flow diagram (DFD)symbols usually corresponds to a data entity on an entity-relationship diagram (ERD)?

A)Data store
B)​Data flow
C)​Data link 
D)​Process

Question 7

​Diagram 0 summarizes an entire system or subsystem in greater detail than a context diagram.

Question 8

​The traditional approach to information systems development describes activities as ____.

A)processes carried out by people or computers
B)objects that interact with people and each other
C)​objects that send and respond to messages
D)activities that require computational support

Question 9

​A(n)____ is a person or organization outside the system boundary that supplies data inputs or accepts data outputs.

A)data flow
B)data store
C)external agent
D)customer​

Question 10

​An analyst can avoid information overload by adhering to the rule of ____.

A)functional decomposition
B)​interface minimization
C)​process dependency
D)​balancing

Question 11

​The term "diagram 0" is used synonymously with context diagram.

Question 12

The traditional approach to system development views a system as a collection of interacting objects.​

Question 13

​Traditional computer processes are much like procedural computer programs in that they contain instructions that execute in sequence.

Question 14

​A(n)____ represents the system response to one event.

A)DFD fragment
B)context diagram
C)diagram 0
D)​event-partitioned system model

Question 15

​A(n)____ can be a physical system model,a logical system model,or a blend of the two.

A)process definition
B)data flow diagram
C)entity-relationship diagram
D)​context diagram

Question 16

The object-oriented approach to systems development views a system as a collection of processes,some performed by people and some performed by the computer.

Question 17

​Which of the following refers to a modeling technique that breaks the system into a hierarchical set of increasingly more detailed models?

A)Data store
B)​Level of abstraction
C)Data flow
D)​Context diagram

Question 18

​System boundaries are not shown clearly on context diagrams.

Question 19

​A data flow diagram (DFD)that models system requirements using a single process for each event in a system or subsystem is called a(n)____.

A)context diagram
B)​DFD fragment
C)​event-partitioned system model
D)diagram 1.0

Question 20

​____ is the equivalence of data content between data flows entering and leaving a process and data flows entering and leaving a process decomposition data flow diagram (DFD).

A)Balancing
B)Interface minimization
C)​Complexity minimization
D)​Abstraction

Question 21

​An assumption about DFDs that includes things such as instant processing,infinite storage,and zero errors is called ______.

Question 22

In small development projects,a(n)____ may be a small loose-leaf notebook or word processing file.

A)data store
B)data dictionary
C)​activity-data matrix
D)​decision table

Question 23

​The rule of 7 ± 2 is also known as _________.

Question 24

​A symbol on a data flow diagram (DFD)that represents an algorithm or procedure by which data inputs are transformed into data outputs is called a(n)__________.

Question 25

​On a DFD a(n)  ____ represents a file or part of a database that stores information about a data entity.

A)process
B)data flow
C)data store
D)data link

Question 26

​A data flow diagram (DFD)that models system requirements using a single process for each event in a system or subsystem is called a(n)____.

Question 27

​If too much information is presented at once,people experience a phenomenon called _______ .

Question 28

​Which of the following is a table that describes the relationship between processes and the locations in which they are performed?

A)Location diagram
B)Black hole
C)Activity-location matrix
D)​Activity-data matrix

Question 29

​A symbol on a data flow diagram (DFD)that represents an algorithm or procedure by which data inputs are transformed into data outputs is called a(n)____.

A)process
B)​transaction
C)activity
D)​data flow

Question 30

​The term "__________" is used to describe the equivalence of data content between data flows entering and leaving a process and data flows entering and leaving a process decomposition data flow diagram (DFD).

Question 31

​Minimization of interfaces is directly related to the rule of ____.

A)miracle
B)black hole
C)​balancing
D)​7 ±  2

Question 32

​A(n)________ is a data flow diagram (DFD)that summarizes all processing activity within the system in a single process symbol.

Question 33

​A place where data are held pending future access by one or more processes in a DFD is called a(n)________.

Question 34

​Analysts sometimes can spot black holes and miracles simply by examining the _________.

A)context diagram
B)​entity relationship diagram
C)data flow diagram
D)​structured English

Question 35

​A diagram that represents system requirements as processes,external agents,data flows,and data stores is called a(n)______.

Question 36

​Which of the following is a diagram or map that identifies all of the processing locations of a system?

A)Location diagram
B)​Activity-location matrix
C)Activity-data matrix
D)​CRUD table

Question 37

​A DFD _______ represents the system response to one event within a single process symbol.

Question 38

​Which of the following is NOT a technique to document program logic for a process.

A)Structured English
B)​Decision Matrix
C)Decision Tree
D)Decision Table

Question 39

​A ____ is a textual description of a data flow's content and internal structure.

A)data store rule
B)​data flow definition
C)data flow rule
D)​process definition

Question 40

​_________ is a principle of model design that seeks simplicity by limiting the number of connections among model components.

Question 41

​___________ is a method of writing process specifications that combines structure programming techniques with narrative English.

Question 42

​List the five symbols used on a data flow diagram (DFD)and briefly explain what each symbol represents.

Question 43

​A(n)________ is a table that describes stored data entities,the locations from which they are accessed,and the nature of the accesses.

Question 44

​___________  can summarize decision logic more concisely than structured English.

Question 45

​A(n)_______ is a process or data store with a data element that is created out of nothing.

Question 46

​What are the first four steps involved in the construction of a decision table?

Question 47

Explain the difference between traditional and object-oriented approaches to system development.

Question 48

​A(n)________ is a graphical description of process logic that uses lines organized like branches of a tree.

Question 49

​A process or data store with data input that is never used to produce a data output is referred to as a(n)______.

Question 50

​A(n)_______ is a tabular representation of processing logic containing decision variables,decision variable values,and actions or formulas.​