key activities in requirements analysis (week 2)

Question 1

what are the 6 different types of activities in requirement analysis

Answer 1

1. gather detailed information
2. identify functional requirements
3. identify non functional requirements
4. define non functional requirements
5. prioritise requirements
6. evaluate requirements

Question 2

what happens in activity 1 : gather detailed requirements

Answer 2

• -> talk to the users of new system or similar systems
• -> read the documentation on existing system
• -> develop expertise in business area of the system
• -> collect technical information = ie understand computer usage, work locations software packages, etc

Question 3

what happens in activity 2: identify functional requirements

Answer 3

• -> system requirements that describe what the system must perform
• -> needed to support the business process

Question 4

what happens in activity 3 : identify non functional requirements

Answer 4

• -> constraints or characteristics expected from the system
• -> PURS
• -> scalability
• -> performance
• -> usability
• -> reliability
• -> security

Question 5

what happens in activity 4 : define non functional requirements

Answer 5

• -> development constraint = system should be written in java
• -> system constraint = validate the pin number in 3 seconds

Question 6

what happens in activity 5 : prioritise requirements

Answer 6

• -> manage users requests according to user needs, urgency, etc
• -> balance between user needs and limitation of resources
• -> scope creep is the tendency of a function list to grow in an uncontrollable manner and is a challenge when managing requirements.it leads to cost overruns and implementation delays

Question 7

what happens in activity 6 : evaluate requirements

Answer 7

–> evaluate the requirements until an acceptable requirements model

–> evaluate all possibilities in the design and implementation of the system

–> validate the accuracy and correctness of the requirements

–> iterative process