Analysis and Design
- Created by: jessicabrown00
- Created on: 17-02-17 17:56
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- Analysis and Design
- Identifying the Problem
- Interview
- Questionnaire
- Existing Paperwork
- Observation
- Design Specification
- Data Capture-
- Function- what the system has to do
- Function- how it will do it
- User Interface
- Output
- Storage
- Security
- Documenting inputs, processing and outputs
- Think about each stage in the process
- Decide what information needs to be produced as an output
- List the data that will need to be put into the system
- Work out what processing the computer will need to do to turn the input into the output
- Input
- Data capture devices
- Validation
- Verification
- Data Capture Forms
- Paper
- Computer Based
- Designing to reduce data-entry errors
- Validation
- Presence Check- checks some data has been entered
- Range Check- checks that the data is within a certain range of letter and numbers
- Format Check- checks data follows the correct pattern
- Length Check- makes sure that the correct number of characters is entered
- Look Up Check- makes sure the data is on a list of acceptable values
- Cross Field Check- makes sure that two fields are always entered correctly each time they are entered into a record
- Check Digit- used to make sure long numbers are entered correctly.
- Verification
- Double Entry
- Proof Read
- Validation
- Processing Softwares
- Spreadsheet
- Database Management Systems
- Webpages or interactive presentations
- Output
- Training
- Test Planning
- Client approval
- Identifying the Problem
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