The PPI website project is focusing on creating and documenting DFDs. Suzanne feels that this traditional approach is a proven way of building a strong foundation for the analysis and design work that lies ahead. Charlie is not so sure. He spent last week identifying requirements and creating some high-level use cases. He is anxious to continue with the object-oriented techniques. During lunch, Charlie tells Suzanne that he doesn't understand how the DFDs will help in building the PPI project.

• If you were Suzanne, how would you respond to Charlie?
• Discuss the strengths and weaknesses of the traditional approach using DFDs.