Question 1. [35 points] Prepare a Data Flow Diagram for the first system you selected. The diagram should resemble 3 levels. It should include the context diagram, diagram 0, and diagram 1 levels. All levels should be illustrated. Levelling and balancing principles should be given a special emphasis. After constructing your diagram, select an essential process within the system you analyzed. Suppose you are preparing a data dictionary, hence, prepare a process description for the process selected. The details/areas you use in your process description, their selection and application/illustration will be freely defined by yourself.

Question 2. [35 points] Prepare a Use Case Diagram for the second system you selected. Take into account the relationship types (extend/include) between various use cases illustrated in your diagram. After constructing your diagram, select an essential use case within the system you analyzed. Prepare a description/written statement for this use case. The details/areas you use in your description/statement will be defined according to the Cockburn template for writing use cases.

Question 3. [30 points] Select a process from one of the systems you analyzed in Questions 1 and 2. You should not select the process you have already analyzed in Question 1 process description. Select another one. Model the process you selected with using Activity Diagram. Construct your diagram with taking into account the functional areas within your system.