|Difference between Type and Category|
Rule of Thumb: when you need to clasify a thing, use Type if it can be of only one Type, and Category if can have more than one.
In Data Model Patterns David Hay makes a point discussing between the difference of a Type or a Category of a thing.
Basically Type is a N to 1 relationship (a thing can be of only one Type) and Category is a M to N relationship (a thing can have many categories at the same time).
|Created: 10/02/04 08:57 PM by jnj Last update: 10/02/04 08:57 PM by jnj|