Introduction to Software Engineering: Concepts, Principles, and Ethics, Slides of Information and Computer Technology

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Software

Engineering

INTRODUCTION

Basic Knowledge

Software Systems

Software Development Process

Computer Fundamentals

Programming Fundamentals

Definitions

• (^) Engineering on the other hand, is all about developing

products by using well-defined, scientific principles and

methods.

• (^) Engineering also refers to the application of science,

mathematics and technology to find the best possible

solution for a realistic everyday problem.

Definitions

• (^) Software Engineering is a branch in computer science,

which uses well-defined engineering concepts required to

produce efficient, durable, scalable, in-budget, and on-time

software products.

• (^) IEEE defines software engineering as:
  • (^) The application of a systematic, disciplined, quantifiable & measurable approach to the development, operation, and maintenance of software; that is, the application of engineering to software.
  • (^) The study of approaches as in the above statement.
• (^) The expected outcome of software engineering is an efficient

and reliable software product.

Transitional

This aspect is important when the software is moved

from one platform to another:

• (^) Portability
• (^) Interoperability
• (^) Reusability
• (^) Adaptability

Maintenance

This aspect briefs about how the software has the

capabilities to maintain itself in the ever-changing

environment:

• (^) Modularity
• (^) Maintainability
• (^) Flexibility
• (^) Scalability

Why Software Engineering?

• (^) Provide an understandable process for system development.
• (^) Develop systems and software that are maintainable and

easily adopt.

• (^) Develop robust software and system that can stand the test

of time.

• (^) For engineers to appreciate software development

processes.

Need for Software Engineering

• (^) Huge software applications  (^) As the size of a software becomes large, engineering has to step to give it a scientific process in order to help manage the application It is easier to build a wall than a house or building
• (^) Scalability If the software process were not based on scientific and engineering concepts , it becomes easier to re-create new software than to scale an existing one.
• (^) Cost cost of the software remains high if proper process are not adapted.
• (^) Dynamic Nature of software If the nature of software is always changing, new enhancements need to be done to the existing application. This is where the software engineering plays a good role.
• (^) Quality Management software development provides better and quality software product

Software Engineering Ethics

• (^) Software engineering has evolved over the past several

years from an activity of computer engineering to a

discipline in its own right.

• (^) Professional societies and institutions have an important

role to play in setting ethical standards, Organizations

such as:

• ACM

• IEEE

• (^) British Computer Society

General SWE Ethical Standards:

Like other engineering disciplines, software engineering

is now carried out within a social and legal framework

known as Code of

Ethics and Professional Practice. Some of these are:-

• (^) Confidentiality
• (^) Competence
• (^) Intellectual property rights
• (^) Computer misuse

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