Table definition in NAV 2013 R2

I have changed a field name and the keys in a table in NAV 2013 R2. However when I viewed the same table in SQL management Studio, I can’t see these changes. I have restarted all applications (NAV 2013 R2 , SQL server 2012) and also restarted the NAV instances but still have the same issue. The changes done in NAV development environment did not reflect in SQL management studio Can you please help?