Ch 7: Using Data Flow Diagrams Flashcards Preview

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Flashcards in Ch 7: Using Data Flow Diagrams Deck (19)
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1

What is one of the main methods available for an analyst to use when analyzing data-oriented systems?

2

What are the four advantages of using a data flow approach over narrative explanations of data movement?

3

What are the four data types that can be symbolized on a data flow diagram?

4

What is a context-level data flow diagram? Contrast it to a level 0 DFD.

5

Define the top-down approach as it relates to drawing data flow diagrams.

6

Describe what "exploding" data flow diagrams means.

7

What are the trade-offs involved in deciding how far data streams should be exploded?

8

Why is labeling data flow diagrams so important? What can effective lebels do on data flow diagrams accomplish for those who are unfamiliar with the system?

9

What is the difference between a logical data flow diagram and a physical data flow diagram?

10

List three reasons for creating a logical data flow diagram.

11

List five characteristics of a physical data flow diagram that a logical data flow diagram does not have.

12

What are transaction files required in a system's design?

13

How can an event table be used to create a data flow diagram?

14

List the major sections of a use case.

15

How can a use case be used to create a data flow diagram?

16

What is partitioning, and how is it used?

17

How can an analyst determine when a user interface is required?

18

List three ways of determining partitioning in a data flow diagram.

19

List three ways to use completed data flow diagrams.