For pizza place it would be best to use a four model

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For Pizza Place, it would be best to use a four-model approach for analyzing their current and prospective systems. An analyst would need to create a logical model and a physical model of the current system. The logical model could include a written description of how employees take orders and customer information. The physical model could be a detailed video of the entire process. Then, the analyst would need to create a logical model and a physical model of the
Running head: PIZZA PLACE SDLC PHASES 14 prospective system. They could use the same steps that they used to create the old system’s models. Data Diagrams Also, “A data flow diagram (or DFD) is a graphical representation of the flow of data through an information system. It shows how information is input to and output from the system, information sources and destinations, and where it's stored ” (What is a Data, 2017). A data flow diagram can also be used to demonstrate how data will flow through a system and turn into information that can be distributed to the system users. This can be an inexpensive approach to a visualization of a system. The last approach that can be used to analyze a system is the object- oriented analysis approach. This approach treats every item like an object. The objects have attributes, methods, messages, classes, and relationships. A data flow diagram would be an essential tool for Pizza Place to analyze their current system. Since they have so many pieces of information, like customers name, phone number, address, order, and order details, it would be helpful to put it all into a data flow diagram. This diagram could then be used to analyze how the new system could be more efficient and cohesive. System Requirements Checklist A system requirement is a characteristic or feature that must be included in an information system to satisfy business requirements and be acceptable to users. System requirements serve as benchmarks to measure the overall acceptability of the finished system (Tilley, 2019). It is important for system analysts to conduct interviews to see what users require in the new system. They can look at what isn’t working in the old system so that they can be sure
Running head: PIZZA PLACE SDLC PHASES 15 to include it as a system requirement. Once the system analyst has acquired all the requirements, he or she can compile them into a checklist to be used when creating the new system. The Pizza Place would need to include a few different things in their requirements checklist. A couple of them would include being able to view a report of all orders as well as being able to view a list of client information such as name, phone number, and address. By conducting interviews of managers and employees, a system analyst may be able to add more requirements to the checklist.

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