文档介绍：®
IBM Software Group
The Principles Behind Writing Good Requirements
Presented by: Leonard Callejo
Start Time: 1PM EST
To join the audio conference please use 800-227-9428 (US)
Audio PIN: 33530
© 2003 IBM Corporation
IBM Software Group | Rational software
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Agenda
! Types of software requirements
! The principles of writing good software requirements
! Warning signs of troublesome requirements
! The level of detail required for good requirements
! Use Cases…how they help with software requirements
! Overall Summary
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IBM Software Group | Rational software
What are requirements?
Definition: capabilities and objectives to which the software or system
you are building must conform. (Rational Unified Process, 2003)
! Requirement Types
!Functional
! Actions that a system must be able to perform
!Non-functional
! Usability
! Reliability
! Performance
! Supportability
! Design Constraints
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IBM Software Group | Rational software
Principles to writing good requirements
Prerequisite: A thorough understanding of the problem
! Use and maintain a Glossary
! Ensure that each requirement is non-conflicting
! plete sentences
! Write simple sentences
! Write in the active voice
! Ensure that each requirement is verifiable or testable
! Write requirement