Inheritance ActiveRecord on Rails

can I create Class Table Inheritance or Concrete Table Inheritance ?

I got this reference http://wiki. rubyonrails. org/rails/ pages/SingleTableInheritance but in some case I need to create Class Table Inheritance or Concrete Table Inheritance, can anybody help me ...

patch on http://wiki. rubyonrails. org/rails/ pages/ ClassTableInheritanceInRails

ActiveRecordnya reference : http://www.martinfowler.com/eaaCatalog/singleTableInher itance.html http://www.martinfowler.com/eaaCatalog/classTableInheri tance.html http://www.martinfowler.com/eaaCatalog/concreteTableInh eritance. html

thanks -- dhendy