1. Computer E-ssentials Group : Will Howell Tausif Rajkotwala
Komal Chandarana

2. Business Requirements
Provide online customer access to assemble and purchase components
Track customer information
Generate Sales and Inventory Reports
Provide billing process
Provide product search capability
Track inventory count and reorder value

3. Context Diagram

4. Level 0 DFD

5. Level 1 – Customer Info DFD

6. Level 1 – Reports DFD

7. Level 1 – Customer Order DFD

8. Level 2 – Order Confirmation DFD

9. Customer Information Processing
System Component
Processes
External Entity
External Entity
1.0
Customer Information Processing
2.0
Order Processing
Customer
EMPLOYEE
3.0 Manage Inventory
4.0
Report Processing
D1 Inventory
D3 Orders
D2 Customer Data
Database

10. Structure Chart

11. Entity-Relationship Diagram
Contains
Have
is Updated by
Updates

12. Entitys and Attributes
Entity: Customer:
CustomerID
CustomerName Username
Password
Secret Question
Answer
Address
City
State
Zipcode
Phone No
CreditCardNo
Entity: Inventory:
InventoryID
InventoryName
InventoryModelNo
InventorySerialNo
InventoryAmount
InventoryQty
Entity: Orders:
OrderID CustomerID
OrderReciptNo OrdertDate
OrderStatus
Entity: Order-Product:
OrderId InventoryId
InventoryQty
OrderAmt 12

13. Physical Design
Customer (Cust_ID, Cust_LastName, Cust_FirstName, Cust_Username, Cust_Password, Cust_Que, Cust_Ans, Cust_Address1, Cust_Address2, Cust_City, Cust_State, Cust_Zip, Cust_Phone, Cust_ , Cust_CreditCard )
Orders (Order_ID, Cust_ID, Order_Date, Order_ReciptNo, Order_Status )
Order-Product (Order_ID, Inventory_ID, Inventory_Price, Order_Qty )
Inventory (Inventory_ID, Inventory_Name, Inventory_ModelNo, Inventory_SerialNo, Inventory_Amt, Inventory_Qty )

14. Implementation in MS Access

15. Create Customer Form

17. Thank You