The data flow diagram is an expanded version of the context diagram. The data flow diagram illustrates how the data flow throughout the system, from the input and output of the process. In our review, we identify three processes: Application process, Policy modification and cancellation process and the Claims process. The Application process is where the applications are processed through the verifications from the DMV and the Police Department. The Policy modification and cancellation consists of verifying if the policyholder and the policy. A refund or balance due is calculated and either a refund or an invoice is sent to the policyholder and the policy is modified or cancelled. The Claims process is more involved as compared to the other two processes. It consists of accepting a claim application, verifying it against the policy and then the processing of the claim. If the claim matches the coverage of the policy, then the claim is processed other wise it is rejected. If an accident is reported in the claim, the report is sent to the Police Department for their review. Should the policyholder be at fault in the accident, then the claim is paid and the policy is updated to reflect an increase rate for the next invoice.
#4
The location connectivity diagram reflects the network structure to its basic form. The central headquarter housing the newly created Information Systems department will maintain and administrate the overall network operations. As described, each location will be operating within its own Local Area Network connected over the Wide Area Network. Each office will have its own main servers and hubs connected over a gigabit connection. The connection between a user and the server under the client-server environment will be connected on 10/100 megabyte wiring. The backbone wiring the entire WAN, for ensured speed and uninterrupted data flow, will be over an ATM (Asynchronous Transfer Mode) wiring. The Policy and Claims database for the entire company will be on Oracle servers located centrally. There will also be an Oracle server dedicated for the Payroll department located at the Waterloo office. The central database will be compatible to the Department of Vehicle?s database server. This will alleviate any transmission problems caused by incompatibilities. In the headquarter office, there will be a Remote Server authenticating the mobile Insurance Agents. There will be an Intranet environment to support these telecommuters. Likewise the central database will be compatible to the web enabled front-end application for which the agents will use.
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