Constructing REA and DFD diagrams
Assignment 3- AIS Summer 2015 Group Project - Part I Tica's Flower Inc. Purchasing (Expenditure) Cycle Requirements: Based on the narrative below, your team should follow steps 1-7 of the event oriented REA modeling (covered in chapter 8) for constructing REA and DFD diagrams. You should complete the attached table describing the list of attributes for each entity. Use underline to indicate the identifier of each entity. Your team should submit completed REA and DFD diagrams for Tica's Flower Inc. You may want to use a free trial version of the online diagramming tool http://www.gliffy.com/ or any other drawing program of your choice that allows you to export your diagrams in a commonly readable digital format (e.g., MS Word, MS PowerPoint, MS Visio, images, etc.). Note that a 30 day free trial of the Gliffy Premium account allows you to save your diagrams as JPEG images. Another possible option is a freely available Dia: http://dia-installer.de/index_en.html. If you identify more Resources/Events/Agents than needed, NO points will be deducted! All students are required to equally participate in the project and may be called upon to present any part of the project. Background: Tica's Flower Inc. is operated by Tica Maribel, the Chief Executive Officer (CEO), and her associated employees. She has decided to develop a database system to track her purchases, floral inventory, accounts payable, and cash payments. However, she does not have time to do the development herself. Therefore, she has hired you and your team members to design and implement the system (i.e., flower purchasing system) for her. She describes the requirements of her system as follows: Whenever flowers are needed, a purchasing clerk prepares a purchase order by completing a purchase order form. The purchase order form includes purchase order number, order date, item number, quantity ordered, order price, employee number (preparer), employee number (authorizer), and vendor number. To accommodate all of floral needs, the purchasing clerk may need to prepare several purchase orders, as Tica's Flower Inc. orders flowers from several vendors. Also, a purchase order can be made for several types of flowers from a single vendor. When the purchase order form is prepared, the purchasing clerk forwards the form to the CEO, Tica Burke, who approves the order. The approved purchase order then sends to a vendor. When the order is received, a warehouse department clerk inspects the quality of flowers and verifies the quantity of flowers based on the purchase order and the packing slip included in the shipment. The clerk then prepares a receiving report, forwards the report to an accounting payable clerk for payment process, and updates inventory records. The receiving report includes receipt number, receipt date, quantity received, item condition, purchase order number, employee number (receiver), and vendor number. Also, an invoice is delivered to the accounts payable clerk from the vendor. At the end of each month, the accounts payable clerk prepare an purchase order payment form for all amounts charged through the end of the month by verifying invoices, purchase orders, and receiving reports. 1 The purchase order payment form includes payment number, payment date, payment amount, employee number (preparer), employee number (authorizer), receipt number, vendor number, and account number. The form is then forwarded to the CEO. When the CEO authorizes the payment form, the accounts payable clerk prepares a check and mails it to the vendor. Finally, a monthly summary report of purchase orders and payments is prepared for each month and forwarded to the CEO. Prepare an REA diagram describing Tica's Flower Inc.'s database. You may repeat a box for an individual entity if necessary to make your drawing neat. Tica would like for you to consider that, eventually, as new stores are opened, she will have store managers in each store that will perform the tasks she now performs. As a result, the system should be planned to always store information about the employee associated with transactions, whether that employee enters information, performs a task (such as delivery) or formally authorizes the transaction. Hints: (1) Each item on a floral receipt may be from a different purchase order. Different items on a single purchase order may be received at different times using different receipts. (2) Each check may pay for several receipts. However, a single receipt will always be paid for using the same check. Prepare the context diagram and the level 0 DFD. Deliverables: For the list of attributes for each entity, complete the table in the \"TeamNumber-Part1-Attributes .docx.\" Use underline to indicate the identifier of each entity. All REA and DFD diagrams should be in a digital format (e.g., MS Word, PowerPoint, MS Visio or images). Submit two files. Be sure to change the file name using your team number. For example, my MS Word file for the table would be \"Team10-Part1-Attribtues.docx,\" and MS PowerPoint file (if you are using MS PowerPoint) for REA and DFD diagrams would be 'Team10-Part1-Diagrams.pptx.' 2
