Chapter 6

Question 1

system requirement

Answer 1

something that the system must do or a property that it must have

also called a business requirement

Question 2

Functional vs Non Functional requirements

Answer 2

Functional - something the system must do
ex) a car must start

Non Functional - a property or quality the system must have
ex) a car has air conditioning

Question 3

criteria for system requirements

Answer 3

consistent
complete
feasible
required
accurate
traceable
verfiable

Question 4

what is the process of requirements discovery

Answer 4

1. problem discovery and analysis
2. requirements discovery
3. documenting and analyzing requirements
4. requirements management

Question 5

what is pieces in terms of problem discovering

Answer 5

the need to correct or improve…

performance
information
economics
control or security 
efficiency 
service

Question 6

what are system objectives

Answer 6

• The expectations for a new system
• Measurable statements of business performance
  ex) decrease by 50 percent time to blah blah

Question 7

what are system constraints

Answer 7

*any limitation on achieving system objectives

schedule
cost
technology
policy

Question 8

requirements discovery

Answer 8

given an understanding of problems, the system analyst can start to DISCOVER SYSTEM REQUIREMENTS

Question 9

fact finding

Answer 9

the formal process of using techniques (sampling, interviews, etc.) to collect information about system problems, requirements, and preferences. also called information gathering or data collection

Question 10

requirements management

Answer 10

the process of managing changes to the requirements

Question 11

what are the seven fact finding techniques

Answer 11

1. sampling
2. research and site visits
3. observations of the work environment
4. questionaries
5. interviews
6. prototyping
7. joint requirements planning