Subclasses to Relations
Product
name
category
price
isa
isa
Educational
Product
Software
Product
Age
Group
platforms
gadget
39
Toy
photo
49
Camera
gadget
99
Gizmo
Category
Price
Name
unix
Gizmo
platforms
Name
retired
Toy
todler
Gizmo
Age Group
Name
Product
Sw.Product
Ed.Product