Software Engineering Lec#5

Process activities
The four basic process activities of specification, development, validation, and evolution are organized differently in different development processes. In the waterfall model, they are organized in sequence, whereas in incremental development they are interleaved. How these activities are carried out depends on the type of software, people, and organizational structures involved. There are different ways to organize these activities.
This section is simply to provide for software engineer interest with an introduction to how the activities can be organized.

1. Software specification
Software specification or requirements engineering is the process of understanding and defining what services are required from the system and identifying the constraints on the system’s operation and development. Requirements engineering is a particularly critical stage of the software process as errors at this stage unavoidably lead to later problems in the system design and implementation.
The requirements engineering process aims to produce an agreed requirements document that specifies a system requirements.