Implement a new data type

[mohand oubelkacem makhoukhene <mohand-oubelkacem@xxxxxxxxxxx>]

Hello;

I whould like to implement a new data type next to char, number, varchar... A Money type.

So i'll have to change the source code, but i don't know which fonctions i need to change and which part to work on.

I need some help to implement this new data type.

Thank you and best regards

Mohand