Error 1054(Error: Unknown column 'url_id' in 'field list')

Hi,
I am trying to add a new column url_id on add product page.
added a column in db...then made changes to view and controllers. Now, the form is looking good. but when i try adding a product i get the below error:

Notice: Error: Unknown column 'url_id' in 'field list'
Error No: 1054
INSERT INTO oc_product SET model = 'Tally',url_id = 'RkoKiRS0FbI', sku = '', upc = '', ean = '', jan = '', isbn = '', mpn = '', location = '', quantity = '1', minimum = '1', subtract = '1', stock_status_id = '6', date_available = '2015-08-12', manufacturer_id = '0', shipping = '1', price = '0', points = '0', weight = '0', weight_class_id = '1', length = '0', width = '0', height = '0', length_class_id = '1', status = '1', tax_class_id = '0', sort_order = '1', date_added = NOW() in /home/nextgen1/public_html/mysite/system/library/db/mysqli.php on line 41Notice: Undefined index: url_id in /home/nextgen1/public_html/mysite/vqmod/vqcache/vq2-admin_model_catalog_product.php on line 15Warning: Cannot modify header information - headers already sent by (output started at /home/nextgen1/public_html/mysite/admin/index.php:84) in /home/nextgen1/public_html/mysite/system/library/response.php on line 12

Please help