Requirements Engineering

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4. Requirements Validation Process

1) Validity verification 2) Consistency check 3) Integrity Verification 4) Realism check 5) Verifiability

5. Requirements Management (Process of managing changes to system requirements system requirements )

Are the basis for: estimating cost and time planning activities perform activities track requirements manage requirements satisfy needs and requests

Requirements evolve because of: 1) Changes in a system's environment 2) The customer's better understanding of their real needs

Objectives: Establish and maintain a document with the agreements between the customer and the development team about the customer's needs of the customer and what the system will do

3. Validation of requirements

The user must visualize the system in and imagine how it fits into his or her it fits into their work.

Validation is important because an error in a error in a requirement is very costly because it because it implies changes in all the other stages.

Validation is the review that the requirements requirements are what the user wants.

2. Requirements elicitation and analysis requirements

Stage in which the technical software development staff will work on technical development staff will work on:

Activities: 1) Understanding the application domain. 2) Collection of requirements. 3) Ranking. 4) Conflict resolution. 5) Prioritization. 6) Verification of requirements.

To: 1) Establish requirements

With Stakeholders: 1) Customers and end users of the system, 2) Engineers who develop or maintain other systems other systems, 3) Business administrators, 4) System domain experts, 5) Employee representatives, etc.

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