CREATE TABLE IF NOT EXISTS survey_mcaptcha_hostname ( url VARCHAR(3000) UNIQUE NOT NULL, secret VARCHAR(100) UNIQUE NOT NULL, ID SERIAL PRIMARY KEY NOT NULL ); CREATE TABLE IF NOT EXISTS survey_mcaptcha_campaign ( campaign_id VARCHAR(100) NOT NULL, public_id VARCHAR(100) NOT NULL, url_id INTEGER NOT NULL references survey_mcaptcha_hostname(ID) ON DELETE CASCADE, synced_till INTEGER NOT NULL DEFAULT 0, ID SERIAL PRIMARY KEY NOT NULL ); CREATE TABLE IF NOT EXISTS survey_mcaptcha_analytics ( campaign_id INTEGER references survey_mcaptcha_campaign(ID) ON DELETE CASCADE, time INTEGER NOT NULL, difficulty_factor INTEGER NOT NULL, worker_type VARCHAR(100) NOT NULL, ID SERIAL PRIMARY KEY NOT NULL );