Maybe you have a particular limited set of vehicles but trucks I know
have from 4 to 10 (or more) wheels and motorcycles have 2 or 3 wheels
and Semi-trailer trucks have 10 to 20 (or more) wheels depending on
application. I would store the number of wheels in the database.
Norm
On 05/24/2013
I have 3 classes ("Truck", "Semi", "Motorcycle") that all inherit from
the "Vehicle" class.
Each subclass has an attribute for "Wheels" that tells how many wheels
the vehicle has (I do not store these values in the database because
they will never change)
I'm wondering what is the preferred method
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