yes
select dept_store_chain_name from department_store_chain where dept_store_chain_id = 1
yes
select store_name from department_stores
Show how many department stores does the store chain South have?
select count ( * ) from department_stores as t1 join department_store_chain as t2 on t1.dept_store_chain_id = t2.dept_store_chain_id where t2.dept_store_chain_name = "South"