Use Case Description:

Watson Wearables, Inc. needs to keep track of their office and computer inventory in order to reduce costs, manage reorder points, and better track item locations within their facilities. They need to track which buildings contain what products and be able to contact the manager of each building to verify inventory and reorder products, when necessary. The New Technology Center (NTC) is a building managed by Connor B. Johnson, while the Candice Simms Foundation (CSF) Building is managed by Mary B. Carter. Each manager has access to the building phone number of the building he or she manages. NTC has a phone number of (555) 637-9192. CSF has a phone number of (555) 637-9045. Currently, one of the administrative assistants keeps track of office furniture, computers, servers, printers, scanners, printer toner, etc. using a simple spreadsheet. It looks something like this, with just a sample of five of the items tracked:

Step 1: Read the use case and carefully view the data.

a. Write down the business rules from the data (e.g., An item may be stored in multiple rooms of a building).

b. Write down the business rules from the use case narrative (e.g., Each building is managed by a manager).

Step 2: Define the entities, attributes, and relationships and model them.

To do so, write the relational schema. Look at the sample records and any data found inside the use case description. Find the possible themes, and then:

a. Setup the relational schema (or dependency diagram) to represent all of the attributes listed.

b. If possible, identify a candidate primary key that uniquely defines each row.

Building Item Item Number Name 231134-678 HP Deskjet 895Cse 342245-225 HP Toner Room Number(s) 325, 100 Vendor ID 555 Item Quantity on Order Vendor Name Sam's Supply Store Sam's Supply Store John's Warehouse Total Item Quantity on Hand 20 (10 in each room) 12 0 325 555 2 254668-449 DT Scanner 123 456 18 5 New Technology Center New Technology Center Candice Simms Foundation Building Candice Simms Foundation Building New Technology Center 254678-449 100 987 4 2 DT Hard Drive Electronic Depot, Inc. 100 987 1 254278-450 | DT 400 Cable Electronic Depot, Inc