Use Case Fully Dressed Format

Create Context Diagram, Level 0 and Level 1 Data Flow Diagrams for the Use Case identified for Target Enterprises.

Use Case Name: Search and Browse			ID:UC-1		Priority:high
Brief Description: This use case describes a customer who searches and browses through the target web site
Actor: Target Shopper
Trigger: External Type External Temporal
Preconditions: Web site is still in development
Normal Course 1.0 Search and browse tunes and select items to purchase. 1.1 System displays default home page or customized page 1.2 Target shopper browses links on page or enter username and password 1.3 Target shopper wants to create an account: perform Create account use case 1.4 Target shopper enters search request 1.5 System displays items match the search request 1.6 Target shopper selects item to see if its available for purchase 1.7 target shopper selects an item to add to wish list 1.8 target shopper removes items from wish list 1.9 target shopper selects a item to buy by placing it in shopping cart 1.10 target shopping decides to remove shopping cart items				Information for Steps Username/Password Search Criteria Items matching search Target items New interest Modify wish list New shopping cart entries Modify shopping cart
Alternative Course(s): 1.1 Target shopper is a return visitor (branch to step 1) 1.1.1 System displays page customized for the return visitor using interest from Interest Database prior visit 1.2 Target shopper has created an account (branch to step 2) wish list database 1.2.1 System displays welcome message to account holder Promotions database 1.2.2 Page is customized for the account holder using wish list and similar promotions
Postconditions: 1. One or more items are added to the shoppers wish list 2. account holder may modify wish list 3. shopping cart contents may be modified
Exceptions: E1: Account is not valid (occurs at step 2) 1. System displays a message stating username/password is not valid 2. System ask Target shopper to re-enter a valid username and password or contact customer support for help. E2 1. System displays message that no results were found for that search 2. system ask shopper to search something else.
Summary: Inputs Source Outputs Source
Username/password Search criteria Items matching search Items availability	Target Shopper Target Shopper Inventory Database Inventory Database	New Interest New wish list Modified wish list New shopping cart Entry Modified shopping cart				Interest Database Wishlist Database Wishlist Database Shopping cart Database Shopping cart Database