what are the ids and names of the web accelerators that are compatible with two or more browsers?
SELECT T1.id ,  T1.Name FROM web_client_accelerator AS T1 JOIN accelerator_compatible_browser AS T2 ON T2.accelerator_id   =   T1.id GROUP BY T1.id HAVING count ( * )    > =    2
compatible with two or more browsers refers to COUNT(*) >= 2; ids and names refers to SELECT T1.id, T1.Name;