partial void DeleteRelation_spec_fac(Relation_spec_fac instance);
partial void UpdateRelation_spec_fac(Relation_spec_fac instance);
private void detach_Relation_spec_fac(Relation_spec_fac entity)
{
this.SendPropertyChanging();
entity.Spec_stud = null;
}
partial void InsertRelation_spec_fac(Relation_spec_fac instance);
private void attach_Relation_spec_fac(Relation_spec_fac entity)
{
this.SendPropertyChanging();
entity.Form_ed = this;
}