AIS Week 3
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What is encompassed in documentation?
Narratives, flowcharts, diagrams and anything else that explains how a system works.
What does DFD stand for?
Data Flow Diagram
What is a data flow diagrams (DFD)?
A graphical description of data sources, flows, processed and destination. A DFD documents data flows.
What is a document flow chart?
A graphical representation of the flow of documents and data between departments.
What is a system flowchart?
A graphical description of relationships amount inputs, processing and outputs in an information system.
What is a program flowchart?
A graphical description of the sequence of logical operations a computer performs as it executes a program.
What symbol represents a data source of destination in a data flow diagram?
What symbol represents a data flow in a data flow diagram?
What symbol represents a transformation process in a data flow diagram?
What symbol represents a data store in a data flow diagram?
Two parallel lines
What are the four basic elements in a data flow diagram (DFD)?
- Data sources & destinations
- Data flows
- Transformation processes
- Data stores
What is a data source or destination in a DFD?
The people and organisations that send and receive data.
What is a flowchart?
An analytical technique used to describe an aspect of the information system in a clear concise & logical manner.
What are the 4 categories of flowcharting symbols?
- Input/output symbols
- Processing symbols
- Storage symbols
- Flow & misc symbols
What is a useful function of a document flowchart?
Analysing internal control procedures to identify system weaknesses and inefficiencies.
How is a system flowchart used?
In system analysis, design and evaluation.
What would you like to do?
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