all database objects are stored in sys.objects table. they can be classified as following type:
U ==> normal table
V ==> View
S ==> System table
P ==> Store Procedure
...
for example, if we 'd like to query all tables which are named with ds_in_*, we can write like this:
select
object_id,name
from
sys.objects
where
type='U'
and name like 'ds_in_%'