Testing_109 : Software Engineering

Software Engineering :

• Software engineering is a Techno-Logical and Managerial discipline concerned on a development and maintenance of a software projects or products On-Time & within cost estimates.
• "research, design, develop, and test operating systems-level software, compilers, and network distribution software for medical, industrial, military, communications, aerospace, business, scientific, and general computing applications."
• "the systematic application of scientific and technological knowledge, methods, and experience to the design, implementation, testing, and documentation of software";
• "the application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software";
• "an engineering discipline that is concerned with all aspects of software production";
• and "the establishment and use of sound engineering principles in order to economically obtain software that is reliable and works efficiently on real machines."
• The Major factors in software development is

• Quality
• Schedule/On-Time
• Budget/Cost

"Developing a Quality software within the time and within the cost."
One of the important characteristics of software engineering is "RE-USABILITY".

Advantages of Re-usability :

• Productivity will be increased.
• Development time is reduced
• Testing time also reduced.
• Overall project deliverable time is reduced.
• Budget is saved.

 

Software process :

In software engineering, a software development methodology (also known as a system development methodology, software development life cycle, software development process, software process) is a splitting of software development work into distinct phases (or stages) containing activities with the intent of better planning and management. It is often considered a subset of the systems development life cycle. The methodology may include the pre-definition of specific deliverables and artifacts that are created and completed by a project team to develop or maintain an application.

• A sequence of steps performed for a given purpose.
• A set of activities, method & transformations, practices that people use to develop & maintain a system.

If companies are not following process properly :

• Commitments consistently missed.
• Late delivery.
• Last minute crunches.
• Quality problems.
• Too much Rework.
• Function do not work correctly.
• Customer complaints after delivery.
• People frustrated.

Benefits of process :

• Quality
• Consistency
• Traceability
• Early defect removal
• Reduced re-work & rejection
• Control of Cost.