What is top level DFD?

Related questions

1. What do mean by the DFD?
2. What is DFD and its types?
3. What are the four symbols used in data flow diagrams?
4. How many levels of DFD are there?
5. What is a diagram 0 DFD?

Tags

1. #diagram
2. #information
3. #level
4. #levels
5. #hacking
6. #system
7. #represent
8. #engineering
9. #functional
10. #diagrams
11. #higher
12. #different
13. #abstraction
14. #software
15. #drawn
16. #elements
17. #partitioned