OCR ICT for A2 © Hodder Education 2009 Chapter 1 The systems cycle

OCR ICT for A2 © Hodder Education 2009 Systems cycle  The stages of the system life cycle  Definition of the problem  Investigation and analysis  Design  Implementation  Testing  Documentation  Evaluation and maintenance

OCR ICT for A2 © Hodder Education 2009 Systems cycle  Different approaches to investigating a system  Questionnaires  Interviews  Meetings  Document analysis  Observation

OCR ICT for A2 © Hodder Education 2009 Systems cycle  Software development methodologies  Prototyping  Rapid application development (RAD)

OCR ICT for A2 © Hodder Education 2009 Systems cycle  Testing  Purpose of test data  The importance of testing and test plans

OCR ICT for A2 © Hodder Education 2009 Systems cycle  Specifications created  Requirements specification  Design specification  System specification

OCR ICT for A2 © Hodder Education 2009 Project management  Roles and responsibilities  Project manager  Systems analyst  Systems designer  Programmer  Tester

OCR ICT for A2 © Hodder Education 2009 Project management  Project planning tools  Critical path analysis (CPA)  Gantt charts

OCR ICT for A2 © Hodder Education 2009 Process modelling  Modelling tools include:  State transition diagrams (STDs)  Entity-relationship diagrams (ERDs)  Data flow diagrams (DFDs)  Flowcharts