Different types of Data Flow Diagram

Usep's Pre- Enrollment System


There are four(4) different types of Data Flow Diagram. These are:

1. Current Physical
- Process label includes an identification of the technology (people or systems) used to process the data
- Data flows and data stores are labeled with the actual name of the physical media on which data flow or in which data are stored

2. New Physical
- Represents the physical implementation of the new system

3. Current Logical
- Physical aspects of system are removed as much as possible
- Current system is reduced to data and processes that transform them

4. New Logical
- Includes additional functions
- Obsolete functions are removed
- Inefficient data flows are reorganized