Week5

The purpose of this post is to give the Data dictionary for two processes of the week4 diagram 0 DFD of renting a DVD.

Prcess Name : Verify Membership

Process Number :1

Purpose : The purpose of this process is to check the membership of the customer.

Input Data Flows :

•  Order DVD 

 Output Data Flows :

• Picking List
• Accessing the data
• Ordered Rejected

Process Description :The order initiated by the customer enters in to this process,where the details of the customer is checked with the membership details from the Data store and if they are matched then the order is sent to the picking list.If they are not matched then the order is rejected.

Note :This process includes a simple logic.

Structured English:

If customer is a genuine customer and

  If customer orders from the Picking List

          Create Invoice

Else

       Rejected Order

Process Name : Create invoice

Process Number :2

Purpose: The purpose of this process is to create the invoice for the rented DVD.

Input Data Flows:

• Completed Order

Output Data Flows:

• Invoice

Process Description:When the order is completed then it is entered in to this process and then the invoice is created depending up on the rate of the DVD.The invoice details are then sent to the customer as well as to the Accounts Recievable Data store.

Notes : This process is the intermediate process of the whole operation.