store crealt system You are a systems analyst for a store that extends store credit. The store is planning to create a system for the handling of posting a customer payment for a store charge account. Step 1 You are to complete a decomposed lower level data flow diagram (DFD) for the following requirements for a customer posting payment to a store charge account. This is done by scratch using Microsoft Visio and based on the Gane and Sarson shapes as explained in the lesson and textbook (Chapter 6). The customer will send payment by mail and the payment will be posted through the system that updates the customer charge account. The payments have to be deposited systematically to the bank, recorded in the general ledger by the system, and the system should automatically send the customer a receipt. Your DFD should have two external entities, two data stores, and three processes. You should utilize Microsoft Visio to create this DFD (see the Note Below on how to use Visio). Then, you will take a screen print of the DFD (from Visio) and place it in a Microsoft Word document labeled Step 1. You are to create a weighted average selection table in Excel in order to select the best proposal based upon this weighted average approach. Please highlight the column with the best proposal in yellow. Please paste a screenshot of the Excel table of the weighted average approach in a Word document and write a paragraph (four to seven sentences) in the same Word document as to why this vendor would be the best choice. The information about the vender choices are as follows: - You have received three possible solutions from three different vendors. This project has two constraintscost and schedule. Management has determined that a cost of $15,000 or less would be good but up to $20,000 is acceptable. Management also has determined that a completion time of 180 days or less would be good but up to 240 days would be acceptable. The business user team has determined that there are five business requirements that they would like to see with the final product. - The firm utilizes a numbering system between 1 and 5 to determine if the vendor's proposal satisfies the constraints and requirements. For constraints, the firm usually rates proposals that meet the good criteria with the number 5 , proposals that meet acceptable with the number 3 , and those that do not meet the criteria limits would be rated with the number of 1 . Regarding requirements, if the proposal fully satisfies the requirement, then it would be rated with the number 5 . If the proposal satisfies at least 60% of the requirement, then it would be rated with the number 3 . All other proposals that do not satisfy at least 60% of the requirement would be rated with the number 1. - Furthermore, the importance of the constraints and requirements based on a 100% scale are as follows. - Cost Constraint is 20%. - Schedule is 10%. - Requirement 1 is 20%. - Requirements 2 and 3 are 15% each. - Requirements 4 and 5 are 10% each. Your job as a systems analyst is to review the proposals below and determine which vendor's proposals will be awarded the contract for the project based on a weighted average approach. Please submit the MS Word Document with both screen shots in order to get credit for this case assignment. NOTE: HOW TO CREATE A DATA FLOW DIAGRAM USING MICROSOFT VISIO 1. Start Visio. 2. Select template software. 3. Select data flow model diagram. 4. Now have your Gane and Sarson shapes. 5. Left click and drag shape you want to design on DFD layout area