For this week’s discussion, we have decided to move forward with the software

 
For this week’s discussion, we have decided to move forward with the software development. We are looking at some tools that allow us to better look at the upcoming project. There are several diagrams that all have different purposes of showing other things about the project.
Of the following tools, which do you feel is the most valuable? Explain why.

Functional decomposition diagram (FDD).
Use case diagram.
Data flow diagram (DFD).
Sequence diagram.