What is the difference between a context diagram and diagram 0?
2. What is the difference between a context diagram and diagram 0?
A context diagram and a diagram 0 (also known as a level 0 data flow diagram or a DFD) are both types of visual models used in the field of systems analysis and design.
A context diagram is a high-level diagram that provides an overview of a system by showing the system in relation to its environment. It shows the inputs and outputs of the system, as well as the external entities that interact with the system. The context diagram does not show any internal details of the system, and it is used to provide a broad understanding of the system's scope and context.
On the other hand, a diagram 0 is a more detailed diagram that shows the major processes of the system, their inputs, and their outputs. The diagram 0 provides a more in-depth view of the system than the context diagram, and it is used to identify the main functions or processes that are performed by the system. Unlike the context diagram, the diagram 0 is not concerned with external entities, and it is used to model the internal workings of the system.
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