VISUAL BASIC

Detailed explanation-1: -Physical DFD-This type of DFD shows how the data flow is actually implemented in the system. It is more specific and close to the implementation.

Detailed explanation-2: -A Logical DFD visualizes the data flow that is essential for a business to operate. It focuses on the business and the information needed, not on how the system works or is proposed to work. However, a Physical DFD shows how the system is actually implemented now, or how it will be.

Detailed explanation-3: -Logical DFD-This type of DFD concentrates on the system process and flow of data in the system.

Detailed explanation-4: -A level-0 diagram represents a system’s major processes, data flows, and data stores at a high level of detail.

Detailed explanation-5: -DFD shows how data moves through an information system but does not show program logic or processing steps. DFDs use 4 basic symbols that represent processes, data flow, data stores, and entities. A process receives input data and produces output that has a different content, form, and both.

Detailed explanation-6: -Let’s summarize their differences: A DFD that shows the movement of information is called a logical DFD. A DFD that shows the movement of physical stuff (such as merchandise) is called a physical DFD.

Detailed explanation-7: -There are two distinct types of data flow diagrams: the logical DFD and the physical DFD.