Conceptual Diagram Vs Logical Diagram. Note that the context diagram did not record the movement of merchandise but rather the information flow surrounding the underlying business processes. A dfd that shows the movement of information is called a logical dfd.
The usage is like generalization in uml. A quick high level view of the business requirements to logical where the entities involved are expanded and include more detail and finally the physical data model which can be implemented with a specific database provider like. It is more complex than conceptual model in that column types are set.
Summary logical vs physical dfd.
Imagine an architect making the case to management that investment funds should be spent a certain way. Conceptual logical and physical data models explained and compared data models evolve from conceptual i e. Let s summarize their differences. It is more complex than conceptual model in that column types are set.
