1 . Data Dictionary
Data Dictionary entries for a process from Diagram 0 DFD drew for the DVD Rental Shop in last blog is given below:
First process:
· Process name: DVD Collection System
· Process number: 0.2
· Purpose: its purpose is to accept the request of DVD from the customer, check for availability and give the selected DVD to customer.
· Input data flows: Request for DVD (from customer).
· Output data flows: this system will give DVD selected for customer and Give this information to RENTAL Process System.
· Process description: this Process system will check the availability of DVD requested by the customer from the DVD Database. If available then DVD is given to the registered customer. It checks all the data from DVD database and store all the information about the rental DVD in Rental record database. It will save ‘which DVD is given to whom person’.
· Notes: Student can approach directly to the see the DVD collection system to request. They can also see their information about its availability. All the record related to available DVD, rental DVD, How many hold by the customers is stored by this system and database.
