Please answer 3.4 only

3.1 Remember from deliverable-2 (a) the key external entities interacting with the system, (b) the key inputs and data sources, and (c) key data outputs and sinks. Use a 'Context Diagram' to summarize the relationships between these components.

3.2 Provide a DFD-0 Diagram depicting the main processes in your system.

3.3 Provide Level-1 DFD diagrams (the decomposition of the process/functions from Level-0 with the required databases/data-source/data-sink, and the same inputs/outputs). Your DFD should be contextualized with a project dictionary table that briefly defines each component of DFDs (sub-processes, data-sets, sources, and sinks). NOTE: Please include all necessary external entities (source/sink) and required data sources; label all data flows, balance your DFD; and ensure the labels are consistent with Level-0 DFD and Context Diagram. 3.4 Use Case Development. You need to draft a 'top-level' Use Case diagram along with its Narratives. The use case should be related to your Level-0 DFD. You will deliver a single Use Case Diagram, and multiple narratives, one for each use case.