Create a set of use cases for the following system: A video store (AVS) runs a series of fairly standard video stores. Before a video can be put on the shelf , it must be catalogued and entered into the video database. Every customer must have a valid AVS customer card in order to rent a video. Customers rent videos for 3 days at a time. Everytime a customer rents a video the system must ensure that the customer doesn't have any overdue videos. If so the overdue videos must be returned and overdue fee paid before the customer can rent any more videos. Likewise if the customer has returned overdue videos , but has not paid the overdue fee, the fee must be paid before any new videos can be rented. Every morning the store manager prints a report that lists overdue videos, if a video is 2 or more days overdue then the manager calls the customer to remind them to return the video. If a video is returned in damaged condition the manager removes it from the video database and may sometimes charge the customer.

Use the use-case template

SIMPLIFIED USE CASE FORMAT Use Case Name: Request a chemical ID: UC-2 Priority: High Actor: Lawn Chemical Applicator (LCA) Description: The Lawn Chemical Applicator (LCA) specifies the lawn chemical needed for a job by entering its name or ID number. The system satisfies the request by reserving the quantity requested or the quantity available and notifying the Chemical Supply Warehouse of the pick-up. Trigger: A Lawn Chemical Applicator (LCA) needs a chemical for a job. Type: External Summary Inputs Temporal Chemical name or ID List of approved chemicals Chemical quantity on hand Quantity needed Request confirmation Request quantity available or cancellation Normal Course: Source LCA Lawn Chemicals Supply datastore Outputs Chemical Pick-up Authorization Chemical Pick-up Notice Lawn Chemicals Supply datastore LCA LCA Lawn Chemical Request LCA 1.0 Request a lawn chemical from the chemical supply warehouse. 1. The LCA specifies the desired lawn chemical 2. The system verifies the chemical is approved for usage 3. The system displays the quantity of the lawn chemical on hand 4. The LCA specifies the quantity needed 5. The system asks the LCA to confirm the request for the quantity needed or the quantity available (Alternative Course 1.1) Chemical Outage Notice 6. The system gives the LCA a Chemical Pick-up Authorization for the quantity requested 7. The system notifies the Chemical Supply Warehouse of the chemical pick-up 8. The system stores the Lawn Chemical Request in the Chemical Request datastore Destination LCA Chemical Supply Warehouse Chemical Request datastore Purchasing Information for Steps: Chemical name or ID List of approved chemicals Quantity on hand Quantity needed Request confirmation Chemical Pick-up Authorization Chemical Pick-up Notice Lawn Chemical Request