Hi Expert!I would like a constraint on a SQL Server 2000 table column that is sort of a combination of a foreign key and a check constraint. The value of my column must exist in the other table, but I am only concerned with values in the other table where one of its columns equal a specified value. The simplified tables are:import_table:part_number varchar(30)quantity intinventory_master:part_number varchar(30)type char(1)So I want to ensure the part_number exists in inventory_master, but only if the type is 'C'. Is this possible? Thanks.Thanks in advance!