?What is a Software Process Model? What are the fundamental activities that are common in all process models

software process model is a simplified representation of a software process. Each process model represents a process from a particular perspective, and thus provides only partial information about that process.

fundamental activities that are common in all process models :

 1. Software specification The functionality of the software and constraints on its operation must be defined.

 2. Software design and implementation The software to meet the specification must be produced.

3. Software validation The software must be validated to ensure that it does what the customer wants.

4. Software evolution The software must evolve to meet changing customer needs.