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CREATE TABLE countries ( country_id INTEGER PRIMARY KEY, name text NOT NULL );
CREATE TABLE languages ( language_id integer, name text NOT NULL, PRIMARY KEY (language_id) );
CREATE TABLE country_languages (
country_id integer NOT NULL,
language_id integer NOT NULL,
PRIMARY KEY (country_id, language_id),
FOREIGN KEY (country_id) REFERENCES countries (country_id)
ON DELETE CASCADE ON UPDATE NO ACTION,
FOREIGN KEY (language_id) REFERENCES languages (language_id)
ON DELETE CASCADE ON UPDATE NO ACTION
);
CREATE TABLE cities ( id INTEGER NOT NULL, name text NOT NULL ); INSERT INTO cities (id, name) VALUES (1, 'San Jose');