I am new to Magento. I have a website running on Magento where I need to change the status of almost 1000 orders from 'product_shipped' to 'delivered'. So is it a good idea to change the status of an order through a SQL query(using the order_id)? If it is, then what are all the database tables that are involved in changing the order status? Is it limited to just these two tables - 'sales_flat_order' and 'sales_flat_order_grid' ?