Delete action in Ax2012

There are four delete actions:

1. None: A None delete action will delete selected row in a table but nothing occurs to the table that relate to this table.
2. Cascade: A Cascade delete action will delete all the records in the related table, i.e, deleting the parent record will also delete child record in the related table.
3. Restricted: A Restricting delete will raise an error message if the user tries to delete a record, where records exists in related table where the foreign key is equivalent to the primary key of the current table.
4. Cascade + Restricted: The delete action performs an restricted, if the record of the table will  be deleted directly and performs an cascade, if the record of the table will be deleted through a cascade delete action of a database.