Sachini : Update database
(Create data access for virews )
Sachini : Update database : 
CID, item_id, Order id and emp_id changed to integer and auto increment
Credit_balance added to LO & VIp customers
Sachini : Update database : 
CID, item_id, Order id and emp_id changed to integer and auto increment
Credit_balance added to LO & VIp customers
Merge pull request #1 from vipula-11/Sachini

Sachini