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LO5 Understand the process flow of information - Coggle Diagram
LO5 Understand the process flow of information
5.1 Information sources and data types
Internal source
External source
Primary data
Secondary data
Qualitative data and quantitative data
Purpose
5.2 Data flow diagrams (DFDs)
External entities
Processes
Data stores
Data flows
Standard symbols used
Connectivity rules for drawing Level 1 DFDs
At least one input or output for each external entity
Data flows only in one direction
Every data flow is labelled
Every data flow connects to at least one process
At least one input data flow and/or at least one output data flow for each process
Impacts affecting the flow of information in information systems