Chapter 3 part 1

Question 1

Data flow diagram (DFD)

Answer 1

a graphical description of data sources, flows, processes, storage, and destinations

Question 2

Document flowchart

Answer 2

a graphical description of the flow of documents and information between departments or areas of responsibility

Question 3

System flowchart

Answer 3

a graphical description of the relationship among the input, processing, and output in an information system

Question 4

Program flowchart

Answer 4

a graphical description of the sequence of logical operation a computer performs as it executes a program

Question 5

A data source and a data destination

Answer 5

are entities that send or receive data that the system uses or produces

Question 6

Data flow

Answer 6

the movement of data among processes, stores, sources and destinations

Question 7

Processes

Answer 7

the transformation of data

Question 8

Data store

Answer 8

a repository of data

Question 9

Context diagram

Answer 9

it is the highest-level DFD, because it provides the reader with a summary-level view of a system

Question 10

Flowchart

Answer 10

an analytical technique used to describe some aspect of an information system in a clear, concise, and logical manner

Question 11

Flowchart symbols are divided into four categories

Answer 11

input/output symbols
processing symbols
storage symbols
flow and miscellaneous symbols