Requirement Fundamental What ‘s Requirement? A requirement is defined as a property that must be exhibited in order to solve some real-world problem. A requirement is a singular documented need of what a particular product or service should be or perform (wiki: http://en.wikipedia.org/wiki/Requirement)
Requirement Fundamental Type of Requirement Functional Requirement Non-Functional Requirement System Requirement Software Requirement Product and Process Requirement Quantifiable Requirement Emergent Requirement
Functional v.s. Non function Requirement To recode sale transactions . To print at speeds of 10 pages per 30 seconds To check special characters in the password filed Salary information must be encrypted. Response times less than 10 seconds.
Functional v.s. Non function Requirement Non Functional Req. To print at speeds of 10 pages per 30 seconds Response times less than 10 seconds Functional Req. To recode sale transactions To check special characters in the password filed Salary information must be encrypted. .
Functional v.s. Non function Requirement Functional Req. In systems engineering, a requirement can be a description of what a system must do Non Functional Req. This type of requirement specifies something that the delivered system must be able to do. Another type of requirement specifies something about the system itself, and how well it performs its functions
System V.S. Software Requirement SYSTEM System requirements are the requirements for the system as a whole. In a system containing software components, software requirements are derived from system requirements
Product V.S. Process Requirement
Quantifiable Requirement Software requirements should be stated as clearly and as unambiguously as possible, and, where appropriate, quantitatively. It same Non Functional Requirement