ANALYZING REQUIREMENTS ENGINEERING PROBLEMS

The term user alluded to in this definition may be an end user of the system or a person behind the screen. However, it may also denote several classes
of indirect users, such as people who do not themselves turn the knobs but rather use the information that the system delivers. It may also denote the customer (client) who pays the bill. During requirements engineering, different types of user may be the source of different types of requirement. The term user is used to denote both direct (end) users and other stakeholders involved in
the requirements engineering process [Vliet-00]. The definitions of terms used in the requirements engineering that corresponds to the persons are as
follows [IEEE-610.12].