1. Texas Pipe and Supply
Presentation #3

2. Outline Review Business Requirements Context Diagram Level 0 DFD
System Diagram
ER Diagram
Interface Design

3. Business Requirements
Using the Web, the inventory clerks will be able to search a main inventory database and locate parts that are on hand to purchase.
Clerks can place orders for customers, retrieve past orders by the invoice number, and also track an existing customer’s credit.
Access from any computer with internet capabilities
Search the Texas Pipe and Supply Inventory Database
Place orders for customers
Keep track of customer information such as address and credit limit

4. Context Diagram

5. Level 0

6. Level 0 cont.

7. Level 1

8. System Diagram

9. ER Diagram

10. Sample Interface