documentation of AIS Flashcards
1
Q
why is documentation important?
A
- depicting how the system works
- standardising communication with others
- training users
- controlling systems development and maintenance costs
- auditing AISs
- establishing accountability
- designing new systems
- saving money
2
Q
what is a flowchart?
A
it documents business processes in easy to follow diagrams
3
Q
what is the purpose of flowcharts?
A
- to understand business operations
- to identify internal control weaknesses and problems
- to help auditors verify business processes
4
Q
what are the uses of a data flow diagram (DFD)?
A
- used in systems development process
- tool for analysing an existing system
5
Q
what are the types of a data flow diagram (DFD)?
A
context DFD
- overview of the system
- high-level
logical DFD
- emphasises tasks of participants
6
Q
what are logical data flow diagrams?
A
- identifies what participants do
- bubble indicates a task the system performs
helps designers decide: - system resources to acquire
- activities employees must perform
- how to protect and control these systems
7
Q
what is decomposition?
A
exploding data flow diagrams to create more detail
- level 0 data flow diagrams = exploded into successive levels of details
- level 1 data flow diagrams: 3.1 - compute gross pay; 3.2 - compute payroll deductions
8
Q
A
