Data Dictionary Entry for the process 3 in diagram 0 DFD OF VIDEO RENTAL SYSTEM
Process Name:Check Availability
Process Number:3
Purpose:To check the availability of a DVD in the shop
Input Data Flows:Avail_req, Avail_Info
Output Data Flows:Avail_status, DVD list
Process Description:This process checks for the availability of DVD’s requested by the customer by getting the information from the datastore and then sends the updated list to the DVD’s datastore, reports the manager and availability status to the customer.
Notes:This is an important process that performs the availability check of DVD’s in the store by accessing the datastore.
