What is the Difference Between Logical DFD and Physical DFD

A logical DFD focuses on the business and business activities, while a physical DFD looks at how a system is implemented. ... It provides a solid basis for the physical DFD, which depicts how the data system will work, such as the hardware, software, paper files and people involved.

1. What is the difference between logical and physical DFD?
2. What advantage is there for drawing a logical DFD before a physical DFD for a new information system?
3. What is a physical data flow diagram DFD?
4. What are the different types of DFD?
5. What is a logical DFD?
6. What is logical diagram?

What is the difference between logical and physical DFD?

The main difference between Logical DFD and Physical DFD is that Logical DFD focuses on business and related activities while Physical DFD focuses on how the system is implemented. Data Flow Diagram (DFD) explains the flow of data of an information system.

What advantage is there for drawing a logical DFD before a physical DFD for a new information system?

What advantage is there for drawing a logical DFD before a physical DFD for a new information system? Physical data flow diagrams help you better understand the people and/or computer systems that are used in the overall system's processing.

What is a physical data flow diagram DFD?

A physical data flow diagram shows how the system will be implemented, including the hardware, software, files, and people in the system. It is developed such that the processes described in the logical data flow diagrams are implemented correctly to achieve the goal of the business.

What are the different types of DFD?

DFD is of two types:

• Logical DFD: Logical data flow diagram mainly focuses on the system process. It illustrates how data flows in the system. ...
• Physical DFD: Physical data flow diagram shows how the data flow is actually implemented in the system. Physical DFD is more specific and close to implementation.

What is a logical DFD?

The logical DFD describes the business events that take place and the data required for each event. It provides a solid basis for the physical DFD, which depicts how the data system will work, such as the hardware, software, paper files and people involved.

What is logical diagram?

A logical data flow diagram focuses on the business and how the business operates. It is not concerned with how the system will be constructed. Instead, it describes the business events that take place and the data required and produced by each event.