This technique is used in a few different business analysis tasks in some knowledge areas in the BABOK® v3 guide. These tasks include the following:
|
Task |
The reason this technique is used |
|
Maintain requirements |
To identify the types of information that flow between multiple processes in an organization with the expectation of potential reuse |
|
Specify and model the requirements |
To illustrate the flow of information in a visual way to stakeholders and solution professionals |
Data flow diagrams are often used as a way of helping to discover processes and data and are generally a technique that is easy to understand for most stakeholders. Using a data flow diagram is also a good way of defining the system boundaries and demonstrates where any interactions with other systems may exist.
The next technique you need to include in your preparation is data mining.