Changes

== Classes and properties structures ==

== Classes and properties structures ==

Some properties of classes are found into different classes. To avoid having different names, we will use the following names:

Some properties of classes are found in different classes. To avoid having different names, we will use the following names:

* date_creation            date creation

* date_creation            date of creation

* user_creation            object User creating object

* user_creation            object User creating object

* fk_user_creation        id user creating object

* fk_user_creation        id of user creating object

* date_modification        date last modification

* date_modification        date of last modification

* user_modification        objet User last modification

* user_modification        object User performing the modification

* fk_user_modification    id user last modification

* fk_user_modification    id user last modification

* date_validation          date validation

* date_validation          date validation

* user_validation          objet User

* user_validation          object User

* fk_user_validation      id user making validation

* fk_user_validation      id of user making validation

= SQL rules =

= SQL rules =