How do you find all dependencies of a database table?

In MS SQL 2005, is it possible to find out which tables/columns are being used either as keys in another table, or as part of a stored procedure?

The reason is I'm trying to clean up some old stored procs and tables, some of 开发者_StackOverflowwhich can be removed, some of which can have columns pruned. But obviously I don't want to remove stuff which is being used.

DECLARE @BaseObject varchar(100)
SET @BaseObject = 'AddEntry'

SET NOCOUNT ON

DECLARE @Objects TABLE (
    id int
)

INSERT @Objects (id)
SELECT id FROM sysobjects
WHERE name like @BaseObject

WHILE (@@ROWCOUNT > 0)
BEGIN
    INSERT @Objects (id)
    SELECT d.depid
    FROM sysdepends d
    WHERE d.id IN (SELECT id FROM @Objects)
    AND d.depid NOT IN (SELECT id FROM @Objects)
END

SET NOCOUNT OFF

SELECT convert(varchar(100),
        '[' + oo.name + '].[' + o.name + ']') AS '--Object--'
FROM sysobjects o 
INNER JOIN sysusers oo ON o.uid = oo.uid
WHERE o.id IN (SELECT id FROM @Objects)
ORDER BY oo.name, o.name

In SQL Server 2008 there are two new Dynamic Management Functions introduced to keep track of object dependencies: sys.dm_sql_referenced_entities and sys.dm_sql_referencing_entities:

1/ Returning the entities that refer to a given entity:

SELECT
        referencing_schema_name, referencing_entity_name, 
        referencing_class_desc, is_caller_dependent
FROM sys.dm_sql_referencing_entities ('<TableName>', 'OBJECT')

2/ Returning entities that are referenced by an object:

SELECT
        referenced_schema_name, referenced_entity_name, referenced_minor_name, 
        referenced_class_desc, is_caller_dependent, is_ambiguous
FROM sys.dm_sql_referenced_entities ('<StoredProcedureName>', 'OBJECT');

Another option is to use a pretty useful tool called SQL Dependency Tracker from Red Gate.