This is what I had to do for my assigment!! I am just checking if this is correct!! Any help would be nice!! Thank You in Advance!
Create and test the following triggers for the database created in Programming Assignment 6.
1. A trigger that prevents the number of miles on a truck from being decreased.
This what I did for this one!
CREATE TRIGGER TURCK_MILES ON TRUCK
FOR INSERT,UPDATE
AS
declare @v1 decimal(8,2)
declare @v2 decimal(8,2)
select @v1 = TRUCK_MILES FROM TURCK
BEGIN
ROLLBACK
END
2. A trigger that prevents the Buy Date for truck from being after the current date.
This is what I put!
CREATE TRIGGER TRUCK_BUY_DATE ON TRUCK
FOR INSERT,UPDATE
AS
declare @date DATETIME
select @date=inserted.TRUCK_BUY_DATE FROM INSERTED
IF @date>GETDATE()
BEGIN
ROLLBACK TRANSACTION
END
3. A trigger that ensures that the Base Code in the Truck table is always in the Base table
My Answer!
CREATE TRIGGER BASE_CODE ON TRUCK
FOR INSERT,UPDATE
AS
declare @1_base_code int
declare @2_base_code int
select @1_base_code=inserted.BASE_CODE
FROM INSERTED,BASE,TRUCK
IF @1_base_code<>@2_base_code
BEGIN
ROLLBACK TRANSACTION
END
