Fire Tint, Inc. $($FTI$)$ applies tint to airplane canopies $($front windows$)$ manufactured by other companies. When the canopy manufacturer asks FTI to tint a canopy, FTI tracks the manufacturer, model number, and the CIN$$a unique serial number assigned to each individual canopy by the manufacturer.

FTI has a finite set of standard treatments it applies to canopies. Each treatment applied by FTI has a treatment number, treatment description, and a published price for each treatment. Although there is a published price for each treatment type, FTI often negotiates the actual price for each treatment when a manufacturer places an order. Sometimes more than one different treatment is applied to the same canopy. When a treatment is applied to a canopy, FTI keeps track of the treatment applied, the date it was applied, and the start and end time of when the treatment was applied, and the negotiated actual price.