Final answer:
To set up a rule in a database table to ensure that the value in the field SaleDate comes before the DeliveryDate, you can use a validation rule in the data macro for the form.
Step-by-step explanation:
To set up a rule in a database table to ensure that the value in the field SaleDate comes before the DeliveryDate, you can use a validation rule in the data macro for the form. In the data macro, you would write a condition that checks if the SaleDate is less than the DeliveryDate. If the condition is not met, an error message can be displayed to the user.
Here's an example of how the condition might look like in a data macro:
IF [SaleDate] >= [DeliveryDate] THEN
SetField([ErrorCode], 1)
SetField([ErrorMessage], 'Sale date must be before delivery date')
END IF
In this example, if the SaleDate is greater than or equal to the DeliveryDate, the [ErrorCode] field is set to 1 and the [ErrorMessage] field is set to 'Sale date must be before delivery date'.