Author: Ms. Jennifer Computer Studies Systems Analysis Author: Ms. Jennifer Computer Studies

Introduction When we are very young we undergo through the process of learning by remembering things and comprehend how to use these things through application. When we start growing up we begin to analyse the environment around us and decide whether we like it or not. This is the process of analysis, the process of brainstorming on facts to come up with our own conclusion.

What is a system? A system refers to all the operations that take effect within a business or an organisation. Operations refer to all the activities done by an employee or a computer in a business or organisation.

Every organisation or business requires a good functional system.

System Lifecycle

Online quizzes – SLC (choose one): Task 1 Online quizzes – SLC (choose one): http://www.teach-ict.com/gcse_new/slc/quiz/ontarget_slc.htm http://www.teach-ict.com/gcse_new/slc/quiz/matchup_slc.htm http://www.teach-ict.com/xml/msjen/student.htm

Detailed definition of the problem 1st Stage Detailed definition of the problem Why a new system is needed? What is the problem of the current system? The Analyst

What is required? 1st Stage Feasibility Study

Present System Study & Analysis 2nd Stage Present System Study & Analysis Observation of current system Questionnaires Interviews

3th Stage Design of new system

System Design 3th Stage Bottom-up Approach Top-down Approach Bottom up approach is used when existing off the shelf software can be integrated with the current system. Bottom up approach design is more structured in nature, as it specifies each part of the system in detail and than it connects those sub systems together. Top-down approach is utilized when the design is accustomed to the requirement of the system. Top down approach design starts with planning the ‘big picture’ and sequentially breaks down the system into smaller parts and segments.

Task 2 Web search: Describe the first three stages of Systems Analysis. Research: www.teach- ict.com/as_a2_ict_new/ocr/A2_G063/331_systems_cycle/slc_stages/ miniweb/pg5.htm

Conclusion The analysis of a system is done by an analyst and consists of seven stages. The first stage is: Problem definition and feasibility study. The second stage is: Study and Analysis of current system The third stage is: Design of new system

Systems Analysis

Programming and Documentation 4th Stage Programming and Documentation Ada Lovelace

User and technical documentation 4th Stage User and technical documentation User documentation Technical documentation User Interface System development

Implementation and Changeover Methods 5th Stage Implementation and Changeover Methods

Control and Review 6th Stage Does the new system do what it is supposed to do? Does it solve the problem that was found in the first place?

7th Stage Maintenance Remove bugs

Task 3 Web search: Describe the last four stages of Systems Analysis. Research: www.teach- ict.com/as_a2_ict_new/ocr/A2_G063/331_systems_cycle/slc_stages/ miniweb/pg5.htm

Conclusion System Analysis is done by one or more Analysts to study the present system and construct a new system design to satisfy system requirements. System analysis has seven stages: Problem definition and feasibility study Present system study and analysis Design of new system Programming and documentation Implementation and changeover methods Control and Review (Evaluation) Maintenance.