By using the following command in sql server, you are able to find out the foreign key constraint references.
SELECT
OBJECT_NAME(f.parent_object_id) TableName,
COL_NAME(fc.parent_object_id,fc.parent_column_id)
ColName
FROM
sys.foreign_keys AS f
INNER JOIN
sys.foreign_key_columns AS fc
ON f.OBJECT_ID
= fc.constraint_object_id
INNER JOIN
sys.tables t
ON t.OBJECT_ID
= fc.referenced_object_id
WHERE
OBJECT_NAME (f.referenced_object_id) = 'YourTableName'
