Query to get database relations in SQL Server 2005

It is a common need to get a list of foreign key relations in a database
This simple query does this:

Select a.Column_name as [FK Column],a.Constraint_Name as [FK],c.column_name [PK Column] ,Unique_Constraint_Name As [PK]
from INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE a
join INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS b on a.Constraint_Schema=b.Constraint_Schema and a.Constraint_Name=b.Constraint_Name
join INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE c on c.Constraint_Schema=b.Unique_Constraint_Schema and c.Constraint_Name=b.Unique_Constraint_Name