>>>Actually if your master lookup table has a good primary key, you use that for your RI and you are all set.
>>>
>>>I use a single table for all picklists on all of my systems.
>>>
>>
>>How would you set it up then to only connect main table with right entities?
>
>Picklists
>
>pk int (identity) (primary key)
>Picklist_Name varcar(50)
>Picklist_Display varchar(50)
>Picklist_Display_Order smallint
>
>
>
>Data Table
>field1
>field2
>field3
>Picklist_code int (fk is pk on Picklists table)

When you need to show available choices for something, do you select from Picklists based on Picklists_Name?

Also, you can insert into your data table a valid Picklist ID, but it would be for completely different purpose - there is no programmatic way to prevent it except for the trigger, IMHO.