Chapter 5 Review

Chapter 5 Review

 1. Whether to use a decision table or a decision tree often is a matter of ____.
A: personal preference
B: data requirements
C: cycle times
D: number of domains

2. A set of DFDs provides a ____ model that shows what the system does, not how it does it.
A: control
B: data
C: logical
D: physical

3. The symbol for an entity is a ____, which may be shaded to make it look three dimensional.
A: circle
B: triangle
C: rectangle
D: square

4. ____ maintains consistency among a set of DFDs by ensuring that input and output data flows align properly.
A: Diverging
B: Balancing
C: Looping
D: Decomposing

5. The data ____ serves as a central storehouse of documentation for an information system.
A: dictionary
B: store
C: diagram
D: partition

6. ____ English is a subset of standard English that describes logical processes clearly and accurately.
A: Logical
B: Structured
C: Simple
D: Dictionary

7. A ____ model describes how the system will be constructed.
A: physical
B: dictionary
C: structured
D: logical

8. A ____ process is a process that has input, but produces no output.
A: blue box
B: black box
C: gray hole
D: black hole

9. When you explode a DFD, the higher-level diagram is called the parent diagram, and the lower-level diagram is referred to as the ____ diagram.
A: subset
B: child
C: pet
D: subordinate

10. ____ refers to whether the data element contains numeric, alphabetic, or character values.
A: Domain
B: Type
C: Category
D: Rules

11. Iteration also is called ____.
A: looping
B: sequencing
C: partitioning
D: decomposing

12. In DFDs, a process symbol can be referred to as a ____, because the inputs, outputs, and general functions of the process are known, but the underlying details and logic of the process are hidden.
A: blue box
B: black box
C: gray hole
D: black hole

13. To draw a context diagram, you start by placing a single process symbol ____.
A: in the center of the page
B: at the top of the page
C: at the bottom of the page
D: anywhere on the page

14. Data elements are combined into ____, also called data structures.
A: domains
B: records
C: skeletons
D: iterations

15. Modular design is based on combinations of three logical structures that does NOT include ____.
A: sequence
B: source
C: selection
D: iteration

16. The only disadvantage of the four-model approach is the added ____ needed to develop a logical and physical model of the current system.
A: time
B: cost
C: both a. and b.
D: neither a. nor b.

17. DFDs use four basic symbols that represent all EXCEPT the following ____.
A: data flows
B: data stores
C: entities
D: attributes

18. DFD entities also are called ____, because they are data origins or final destinations.
A: pseudocode
B: terminators
C: originators
D: sink holes

19. ____ also is called exploding, partitioning, or decomposing.
A: Balancing
B: Leveling
C: Processing
D: Sequencing

20. A ____ documents the details of a functional primitive, and represents a specific set of processing steps and business logic.
A: diagram description
B: physical model
C: data structure
D: process description