Please enable JavaScript.
Coggle requires JavaScript to display documents.
LO5: Understand the process flow of information (5.2 data flow diagrams, 5…
LO5: Understand the process flow of information
5.1 information sources and data
information sources
internal
financial
personnel
marketing
purchasing
sales
manufacturing
administration
external
supplier price list
financial information from a third party
survey results
data types
primary
secondary
qualitative
quantitative
5.2 data flow diagrams
rules and tips
each process should have at least 1 input and 1 output
each data store should have at least 1 data flow in and 1 data flow out
data stored in the system must go through a process
all processes in a DFD must go to another process or data store
each external entity must have at least q input or an output
data flows in one direction
each data flow connects to at least 1 process
symbols
impacts affecting the flow of information in information systems
complete or partial system failure: delay in the flow of data
human error: data being lost, data being misplaced, data being process incorrectly
breakdown in working relations and/or communications: delay in the flow of data, delay in the processing, delay in storage
