rubyonrailsin

I've done some reading on Single Table Inheritance.

I think I need something a little more though.

Classic example.

class Animal < ActiveRecord::Base
// db fields:
name: string
age: int
type: string
breed: string
end

class Feline < Animal
// db fields:
whisker_count: int
end

class Canine < Animal
// db fields:
seeing_eye_dog: boolean
end

So how do Canine and Feline inherit the fields from Animal although
they don't require each others fields. Does the Animals table just
contain all the fields but value can be null and only returns the
available fields for that Model?

Cheers,

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