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Brewbean's is implementing a new discount for return shoppers - every fifth completed order receives a 10% discount. The count of orders for a shopper is placed in a packaged variable named PV_DISC_NUM during the ordering process. This count needs to be tested upon checkout to determine if a discount should be applied. Create a trigger named BB_DISCOUNT_TRG so that when an order is confirmed (the ORDERPLACED value is set from 0 to 1), the PV_DISC_NUM packaged variable is checked. If it is equal to 5, then set a second packaged variable named PV_DISC_TXT to 'Y'. This variable is used in calculating the order summary so that a discount is applied if appropriate.
Create a package specification named DISC_PKG that contains the needed packaged variables. Use an anonymous block to initialize the packaged variables to use for testing the trigger. Test the trigger by using the following update statement:
Update bb_basket set orderplaced =1 where idbasket=13;
Reset the ORDERPLACED to zero for the basket used (this is done as needed to complete trigger testing). Also, disable this trigger when completed so that it does not affect other assignment questions.
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