create a view as superuser
create view V_CUSTOMERS based on Customers Table and give an access to enter, select records to Appuse01,Appuser02,Appuser) and Appuser04 for all the columns excepting Price and Total_val. These two columns will be update by procedure. They should be able to see their records only and not other user's records for security reasons.
Columns:
S_NO
CTL_UPD_User
Cust_Name
DT
Item_id
Item_Name
Quantity
Payment_type
Price
Total_Val