systems life cycle

Mr Caine

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.

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?

Systems Life Cycle Feasibility Study

Analysis

Design

Implementation

Testing

Training and Documentation

Evaluation and Monitoring

Maintenance

Feasibility Study 1

Initial study

looks to see if a new system can be built

at reasonable cost

in reasonable time

Feasibility Study 2Find out what people want from the new system by

using:

questionnaires

interviews

observation

inspection of records

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

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

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

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

Training and documentation

User training on how to use the new system

Documentation to help the user is created

Evaluation and monitoring

Checking user requirements and performance

criteria have been met

Assessment of client/user satisfaction

Setting up review cycle

Maintenance

Set up help-desk facilities

Add extra functions when required

Improve performance

Investigate system crashes to prevent them

happening

Task – System Life Cycle Questions Open the file on Moodle called ‘Systems Life Cycle

Questions’ and complete the Worksheets and Multiple Choice Questions.

Task – System Life Cycle Exam Questions 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.

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.