Software Processes in Software Engineering
Software is the set of instructions in the form of programs to govern the computer system and to process the hardware components. To produce a software product the set of activities is used. This set is called a software process.
Components of Software:
There are three components of the software:
A computer program is a list of instructions that tell a computer what to do.
Source information about the product contained in design documents, detailed code comments, etc.
- Operating Procedures:
Set of step-by-step instructions compiled by an organization to help workers carry out complex routine operations.
There are four basic key process activities:
- Software Specifications:
In this process, detailed description of a software system to be developed with its functional and non-functional requirements.
- Software Development:
In this process, designing, programming, documenting, testing, and bug fixing is done.
- Software Validation:
In this process, evaluation software product is done to ensure that the software meets the business requirements as well as the end users needs.
- Software Evolution:
It is a process of developing software initially, then timely updating it for various reasons.
- Size and Cost:
Day to day growing complexity and expectation out of software. Software are more expensive and more complex.
Software products must have good quality.
- Delayed Delivery:
Software takes longer than the estimated time to develop, which in turn leads to cost shooting up.
Software Process Model:
A software process model is an abstraction of the actual process, which is being described. It can also be defined as a simplified representation of a software process. Each model represents a process from a specific perspective. Basic software process models on which different type of software process models can be implemented:
- A workflow Model:
It is the sequential series of tasks and decisions that make up a business process.
- The Waterfall Model:
It is a sequential design process in which progress is seen as flowing steadily downwards. Phases in waterfall model:
- (i) Requirements Specification
- (ii) Software Design
- (iii) Implementation
- (iv) Testing
- Dataflow Model:
It is diagrammatic representation of the flow and exchange of information within a system.
- Evolutionary Development Model:
Following activities are considered in this method:
- (i) Specification
- (ii) Development
- (iii) Validation
- Role / Action Model:
Roles of the people involved in the software process and the activities.
Attention reader! Don’t stop learning now. Get hold of all the important CS Theory concepts for SDE interviews with the CS Theory Course at a student-friendly price and become industry ready.