Context Diagram LEVEL 0 DFD

Salini Kokatam
Vasavi Bolaram
Ashwini Shamirpet
Kishore Reddy
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The system should allow new user to register,
create their profile and buy membership
online.
Allow customers to rent DVD’s and games
Allow customers to renew their membership.
The system should be based on central
database system and should be accessed from
any computer via internet.
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The website should include facilities like
searching the online catalog,
 creating and maintaining customer information,
 placing rental orders
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The system will enforce rules for processing the
data and the principles by which the organization
operates.
Rental history is stored & maintained to get
information about customers.
Employees should be able to edit customer
Information, add daily reports and update
Inventory.
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External Entity:
Customer
Employee
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Processes:
Customer /Employee Processing
Request Movie
Return Movie
Rental History
Update Inventory
In store transactions
Data Store :
D1 Customer Data
D2 Product Details
D3 Rental History
D4 Product Review
D5 Employee Data
D6 In store Transactions
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External Entity:
Customer
Processes:
Search & Request
Customer & Employee Processing
Validation
Shipping
Data Store :
D1 Customer Data
D3 Rental History
D2 Product Details
Movie Name
Customer
Response
2.1
Search
&
Request
Movie Name
D2
Product Details
Movie Information
1.0
Customer/Em
ployee
Processing
Register/Renew
D1
Message
Request
Request
Customer Details
2.2
Validation
D 3 Rental History
Customer Info
Product & User ID
Shipping Address
Customer
Response
Customer Data
2.3
Shipping
D2
Product & User ID
Product Details
D 3 Rental History
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External Entity:
Customer
Processes:
Accept User Request
Not Member/Membership Expired
Rental Limit Validation
Data Store :
D1 Customer Data
D3 Rental History
Request
Message
2.2 . 1
Accept User
Request
Renew/create
2.2 . 2
Not a member
/Membership
Expired
Request Details
2.2 .3
Rental Limit
Validation
Product & User ID
2.3
Shipping
Customer Data
Customer Info
Register/Renew
Message
D1
Customer Details
Customer Info
1.0
Customer/Em
ployee
Processing
D3
Rental History
External Entity:
Customer
 Processes:
Return Movie Rental
Charging
Add Product Review
 Data Store :
D2 Product Details
D3 Rental History
D4 Product Reviews
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3.1
Return Movie
Rental
Product Return
Customer
Response
Update Inventory
D2 Product Details
Confirmation
Customer, Product
Details
Customer Info
D3 Rental History
Response
Charge
3.2
Charging
D3 Rental History
Payment
Customer
Product Info
Req Product Review
Review
3.3
Add Product
Review
D4 Product Reviews
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