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Systems Life Cycle

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Systems Life Cycle

  1. 1. Mr Caine
  2. 2. Lesson Objectives To know what a Systems Life Cycle is and each of its stages. To understand how the Systems Life Cycle relates to the work we are doing in Unit 2. To be able to identify what is involved in each stage of the Systems Life Cycle.
  3. 3. Unit 2 – What’s Next Analysis (10 Marks) Design (20 Marks) Implementation (40 Marks) Testing (10 Marks) Self Evaluation (8 Marks) Report (6 Marks) Evaluation of others’ use of ICT (6 Marks) What is this series of stages referred to as?
  4. 4. Systems Life Cycle Feasibility Study Analysis Design Implementation Testing Training and Documentation Evaluation and Monitoring Maintenance
  5. 5. Feasibility Study 1 Initial study looks to see if a new system can be built at reasonable cost in reasonable time
  6. 6. Feasibility Study 2Find out what people want from the new system byusing:questionnairesinterviewsobservationinspection of records
  7. 7. Analysis Identifies the problems to be solved Looks in detail at the current system Understands the existing system Identifies desired outcomes Sets up performance criteria
  8. 8. Design Designs the system in line with desired outcomes Chooses input, storage and output methods Decides on the processes Designs input/output screens and layouts of components Designs validation tests Designs test plans
  9. 9. Implementation Produces a working solution according to the design Produces framework for databases, spreadsheets, etc. Uses software tools to produce a solution Produces the working system according to the desired outcomes
  10. 10. Testing Test plan created during design stage is used to test the system Test data is entered Results are compared with what was expected Remedial action is taken to correct faults Validation tests are tested
  11. 11. Training and documentation User training on how to use the new system Documentation to help the user is created
  12. 12. Evaluation and monitoring Checking user requirements and performance criteria have been met Assessment of client/user satisfaction Setting up review cycle
  13. 13. Maintenance Set up help-desk facilities Add extra functions when required Improve performance Investigate system crashes to prevent them happening
  14. 14. Task – System Life Cycle Questions Open the file on Moodle called ‘Systems Life Cycle Questions’ and complete the Worksheets and Multiple Choice Questions.
  15. 15. Task – System Life Cycle ExamQuestions Open the file on Moodle called ‘Systems Life Cycle Exam Questions’ and complete questions which have been taken from previous exam papers. Remember:  Look at the marks available for each question and answer the questions accordingly.
  16. 16. Lesson Objectives To know what a Systems Life Cycle is and each of its stages. To understand how the Systems Life Cycle relates to the work we are doing in Unit 2. To be able to identify what is involved in each stage of the Systems Life Cycle.

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