Spread Knowledge

Virtual University of Pakistan Video Lectures, Handouts, PPT, Quizzes, Assignments & Papers

CS507 - Information Systems - Lecture Handout 07

User Rating:  / 0

Related Content: CS507 - VU Lectures, Handouts, PPT Slides, Assignments, Quizzes, Papers & Books of Information Systems

Types of Systems

What are Systems?

A system is a group of elements that are integrated with the common purpose of achieving an objective.

Example

Purchase & Sales System

Components of a system

Following are the important components of the system.

  • Input elements
    Raw Data input to the computer system
  • Process
    Computation, analysis, application of any model
  • Output elements
    Results of computation or analysis
  • Control mechanism
    Comparison of actual with expected
  • Feedback system
    Corrective action
  • Objectives
    Expected/Ideal output

  • Read more: CS507 - Information Systems - Lecture Handout 07

CS605 - Software Engineering II - Lecture Handout 40

User Rating:  / 0

Related Content: CS605 - VU Lectures, Handouts, PPT Slides, Assignments, Quizzes, Papers & Books of Software Engineering II

Forward Engineering

At the end forward engineering is carried out. It means incorporating the new business processes and rules in the system. Forward engineering requires application of SE principles, methods, and concepts to re-create an existing application. In most cases forward engineering does not simply create a modern equivalent of an older program, rather new user and technology requirements are integrated into the reengineering effort.

Read more: CS605 - Software Engineering II - Lecture Handout 40