View meta data - system objects - SQLServer

View list of constraints for a specific table
Select table_catalog, table_name, constraint_name
from INFORMATION_SCHEMA.CONSTRAINT_TABLE_USAGE
where table_name = 'area' order by table_name asc

View constraint names and table name for a specific column within the DB
Select table_catalog, table_name, column_name, constraint_name
from INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE
where column_name = 'product-pack key' order by table_name asc