There is an option called data blending, here you need to link on at least on one common column between two tables. In data blending whichever the fields you use in a report as a first fields it will work as a primary data source and from other table fields work as a secondary data source.
Please look into the below link for data blending:
Hope it helps.
Use data blending for your requirement. If you want to access data with global filters then use parameters.