You are required to develop an architecture for a system that helps customers in a department store. The store is part of a chain. It does this via specialized store-owned cell phones used only within the store. The system has the following characteristics. a. The cell phones can be used to talk-but only to a store representative using Voice-Over-IP. b. Customers may be transferred to a remote employee if specialized expertise is required. C. The cell phones are loaded with a single application (the app"). d. The app allows taking and transmission of photographs of items in the store. e. The app allows customers to pay for an item at any time (and thus avoid checking it out). The following is a key use case. 1) User activates the app. 2) App shows main menu 3) User selects Detailed Product Information" 4) App displays instructions 5) User photographs an item's bar code 6) App displays table of contents of product description 7) User selects a section 8) App displays the section 1. Design and draw a physical data flow diagram. Explain the parts of your physical data flow diagram that are not obvious. Your diagram should have about 5-10 processing elements. You may use the following Visio template. operation -Data type Operation 2 You are required to develop an architecture for a system that helps customers in a department store. The store is part of a chain. It does this via specialized store-owned cell phones used only within the store. The system has the following characteristics. a. The cell phones can be used to talk-but only to a store representative using Voice-Over-IP. b. Customers may be transferred to a remote employee if specialized expertise is required. C. The cell phones are loaded with a single application (the app"). d. The app allows taking and transmission of photographs of items in the store. e. The app allows customers to pay for an item at any time (and thus avoid checking it out). The following is a key use case. 1) User activates the app. 2) App shows main menu 3) User selects Detailed Product Information" 4) App displays instructions 5) User photographs an item's bar code 6) App displays table of contents of product description 7) User selects a section 8) App displays the section 1. Design and draw a physical data flow diagram. Explain the parts of your physical data flow diagram that are not obvious. Your diagram should have about 5-10 processing elements. You may use the following Visio template. operation -Data type Operation 2