Logical Vs. Physical Data Flow Diagrams. There are two primary types of data flow diagrams, each with a specific function and designed to inform a different target audience. Logical data flow diagrams ...

As an exploded view of the context diagram, a level 1 DFD can be thought of as an “exploded view”. What Is Level 2 Data Flow Diagram? The data flow diagram (DFD) template at this level 2 shows the ...

To illustrate the difference between logical and physical data models for MySQLi, let's look at some examples. Suppose you want to create a database for an online bookstore. Your logical data ...

Data modeling has always had a push-me/pull-you relationship in the IT world. The idea of complete logical and physical data models, insightful definitions, coherent data flow diagrams, and other ...