1. ΙI. System Analysis Data Flow Diagrams
Brendan Wood
Leyla Yakut
Ron Kennedy
ISAM 4635/5635 Systems Analysis & Design by Dr. Rob
04/04/2007

2. Business Need
In today’s marketing environment, Sasmaz Electric recognizes the significance of a web site as an asset to increasing their cliental and overall business operations
They also recognize the need to build a database to house their information

3. System Requirements Web Site Database
Should include company information, references, and detailed product information
Should have a login page for the customers to check order status and to order new products
Database
Tables include customer, product, invoice, vendor, etc.
Reports

4. Context Diagram Sasmaz Online Order System External Entities: CUSTOMER
WAREHOUSE
PURCHASING MANAGER
SHIPMENT COMPANY

5. Context Diagram

6. Level 0 Diagram Processes: Data Stores:
1. Process Customer Information
2. Take Orders
3. Process Delivery
4. Process Invoice
5. Create Purchase Orders
6. Maintain Inventory
Data Stores:
Customer
Products
Orders
Shipments
Invoice
Purchase Orders
Inventory
Delivery Options

7. Level 0 Diagram

8. Level 1 Diagram Process 2: Take Orders Processes: Data Stores:
2.1 Find Products
2.2 Provide Product Information
2.3 Update Shopping Cart
2.4 Checkout
Data Stores:
Customer
Products
Orders

9. Level 1 Diagram Process 2: Take Orders

10. Process 3: Process Delivery
Level 1 Diagram
Process 3: Process Delivery
Processes:
3.1 Choose Delivery Option
3.2 Calculate Shipment Cost
3.3 Post Delivery Options
Data Stores:
Customers
Products
Orders
Shipments
Delivery Options

11. Level 1 Diagram Process 3: Process Delivery

12. Process 4: Process Invoice
Level 1 Diagram
Process 4: Process Invoice
Processes:
4.1 Calculate Order Amount
4.2 Add Shipment Costs
4.3 Create Shipment Request
4.4 Issue Invoice
Data Stores:
Products
Orders
Shipments
Invoice

13. Level 1 Diagram Process 4: Process Invoice

14. Questions / Comments?

15. Thank you