text: CREATE TABLE web_client_accelerator (name VARCHAR, id VARCHAR); CREATE TABLE accelerator_compatible_browser (accelerator_id VARCHAR, browser_id VARCHAR); CREATE TABLE browser (id VARCHAR, market_share INTEGER) -- What distinct accelerator names are compatible with the browswers that have market share higher than 15? SELECT DISTINCT T1.name FROM web_client_accelerator AS T1 JOIN accelerator_compatible_browser AS T2 ON T2.accelerator_id = T1.id JOIN browser AS T3 ON T2.browser_id = T3.id WHERE T3.market_share > 15 CREATE TABLE accelerator_compatible_browser (accelerator_id VARCHAR, browser_id VARCHAR); CREATE TABLE web_client_accelerator (id VARCHAR, name VARCHAR); CREATE TABLE browser (name VARCHAR, id VARCHAR) -- List the names of the browser that are compatible with both 'CACHEbox' and 'Fasterfox'. SELECT T3.name FROM web_client_accelerator AS T1 JOIN accelerator_compatible_browser AS T2 ON T2.accelerator_id = T1.id JOIN browser AS T3 ON T2.browser_id = T3.id WHERE T1.name = 'CACHEbox' INTERSECT SELECT T3.name FROM web_client_accelerator AS T1 JOIN accelerator_compatible_browser AS T2 ON T2.accelerator_id = T1.id JOIN browser AS T3 ON T2.browser_id = T3.id WHERE T1.name = 'Fasterfox' CREATE TABLE browser (id VARCHAR, name VARCHAR); CREATE TABLE web_client_accelerator (name VARCHAR, operating_system VARCHAR); CREATE TABLE accelerator_compatible_browser (accelerator_id VARCHAR, browser_id VARCHAR); CREATE TABLE web_client_accelerator (name VARCHAR, operating_system VARCHAR, id VARCHAR) -- Show the accelerator names and supporting operating systems that are not compatible with the browser named 'Opera'. SELECT name, operating_system FROM web_client_accelerator EXCEPT SELECT T1.name, T1.operating_system FROM web_client_accelerator AS T1 JOIN accelerator_compatible_browser AS T2 ON T2.accelerator_id = T1.id JOIN browser AS T3 ON T2.browser_id = T3.id WHERE T3.name = 'Opera'