create a level-0 dfd for this use case

business info:

Maicawear is a small privately held US-based clothing manufacturer and fitness brand, founded by Christopher Tigre. Maicawear sells a variety of clothing in various styles and colors for men, women and children who follow a fitness lifestyle. Maicawear clothing can be used for both workouts and casual living. Each item of Maicawear clothing comes in a limited number of colors and sizes.

Maicawear currently sells clothing only to individuals. A business plan is under development for B2B (business to business) wholesalers who would resell the Maica Wear line in upscale fitness boutiques and online sites. Individuals purchase for themselves or family and friends. A strict review process will be followed for approving sales to wholesalers to ensure compatibility of the wholesalers brand with the Maicawear brand.

Currently Maicawear needs an information system to manage its sales process and inventory management for sales to individuals. The information system also needs to support marketing initiatives.

Background Information Individual Sales

Individual sales would be made from a website where individuals would search and browse products available for sale.

The site supports coupon (discount) codes that are tied to marketing promotions.

Individual sales are made with a credit or debit card payment in conjunction with a payment processor.

Individual sales are shipped to US-and international addresses provided by the customer. Shipping and handling is included in the individual price of items.

Local sales taxes are assessed for US States that tax clothing sales based on the shipping address. Any import duty fees for international shipping are paid by Maica Wear.

Individual sales will update the Maica Wear inventory management system.

Marketing Plan Individual sales

Maica Wear understands that to grow the brand, customers that like their products must be incentivized to buy more. When browsing the company website, users can create Like Lists of products. These are used by the marketing manager to target special promotions to customers based on their Like Lists.

Customers can also request to be notified if a specific configuration of an item is temporarily out-of-stock. When an item is back in stock, customers are notified of the new availability and given a 20% discount code.

After a customer has made a first purchase, they are incentivized to post a picture of themselves (or the product recipients) on Instagram and Maica Wear will email them a 25% discount for purchasing another item within 30 days.

The marketing manager routinely wants to analyze order data on customers to know how many orders are placed over certain time periods, dollar amounts of orders and specific categories of items (e.g. mens- vs. women's-wear). These are also used to target specific promotions to some customers.

Customers are encouraged to refer a new (potential) customer. When the new (potential) customer makes a first purchase, the referring customer receives a 25% promotion code for his/her next purchase.

Inventory Management

Each sale must check inventory for the availability of the exact configuration of the product selected (e.g. size, color) and reduce inventory appropriately when a sale is booked.

The Inventory Manager needs the ability to update Inventory when new inventory is available for sale.

1. 4. 5. Use Case Name: Purchasing clothing ID: UC - 2 Priority: High Brief Description: This use case describes a customer who purchases items from the website Actor: Customer Trigger: Customer has placed one or more items in shopping cart and is ready to check-out Type External Temporal Preconditions: 1. Website is available 2. Item is available Normal Course Information for Steps 1.0 Customer shows intent to make a purchase Customer may create an optional account Username/password 2. System enables the customer to specify items for purchase by Shopping Cart List adding to a shopping cart 3. System checks inventory to ensure an item is available for Inventory of Items for Sale purchase. If an item is available for purchase, it will be reserved Reserved item list**** in inventory System allows shopping carts to be viewed with total price Shopping Cart List System allows predefined coupon codes to be entered against Coupons a shopping cart total price that will discount the total of the shopping cart 6. System allows tax (state or international tax) to be calculated by Shipping Address shipping address 7. System will collect and verify payment information Payment verification 8. Shipping order is created and items are reserved in inventory Shipping order with an confirmation email being sent to the customer Payment Confirmation Email Alternative Course(s): 1.1 Customer has established account (see branch at step 1) 1. Customer specifies username and password 2. System retrieves account information including stored payment information System verifies the buyer's intention to use stored payment information or modify stored payment information 4. Return to Normal Course (step 2) 1.2 Item is not in stock (branch at step 3) 1. System will allow customers to add this item to a NOTIFY ME LIST when it is back in stock. Postconditions: 1. Shopping cart is empty 2. Customer purchase is recorded 3 Customer sales transaction is recorded Exceptions: E1: Payment is not authorized System displays message that payment is not accepted 2. System asks customer to enter new payment information or exit 3. System terminate use case if buyer specific exit, otherwise return to Normal Course (step 7) 3 1. Summary Inputs Customer records Coupons Shipping address Source Customer Customer Customer Outputs Shipping order Payment confirmation email Destination Warehouse Customer 1. 4. 5. Use Case Name: Purchasing clothing ID: UC - 2 Priority: High Brief Description: This use case describes a customer who purchases items from the website Actor: Customer Trigger: Customer has placed one or more items in shopping cart and is ready to check-out Type External Temporal Preconditions: 1. Website is available 2. Item is available Normal Course Information for Steps 1.0 Customer shows intent to make a purchase Customer may create an optional account Username/password 2. System enables the customer to specify items for purchase by Shopping Cart List adding to a shopping cart 3. System checks inventory to ensure an item is available for Inventory of Items for Sale purchase. If an item is available for purchase, it will be reserved Reserved item list**** in inventory System allows shopping carts to be viewed with total price Shopping Cart List System allows predefined coupon codes to be entered against Coupons a shopping cart total price that will discount the total of the shopping cart 6. System allows tax (state or international tax) to be calculated by Shipping Address shipping address 7. System will collect and verify payment information Payment verification 8. Shipping order is created and items are reserved in inventory Shipping order with an confirmation email being sent to the customer Payment Confirmation Email Alternative Course(s): 1.1 Customer has established account (see branch at step 1) 1. Customer specifies username and password 2. System retrieves account information including stored payment information System verifies the buyer's intention to use stored payment information or modify stored payment information 4. Return to Normal Course (step 2) 1.2 Item is not in stock (branch at step 3) 1. System will allow customers to add this item to a NOTIFY ME LIST when it is back in stock. Postconditions: 1. Shopping cart is empty 2. Customer purchase is recorded 3 Customer sales transaction is recorded Exceptions: E1: Payment is not authorized System displays message that payment is not accepted 2. System asks customer to enter new payment information or exit 3. System terminate use case if buyer specific exit, otherwise return to Normal Course (step 7) 3 1. Summary Inputs Customer records Coupons Shipping address Source Customer Customer Customer Outputs Shipping order Payment confirmation email Destination Warehouse Customer