text: CREATE TABLE IF NOT EXISTS websites (
      website_id SERIAL PRIMARY KEY,
      url VARCHAR (300) UNIQUE,
      name VARCHAR (100)
  );
  
  CREATE TABLE IF NOT EXISTS website_metrics (
      metric_timestamp TIMESTAMP,
      website_id INT NOT NULL,
      status_code SMALLINT NOT NULL,
      response_time REAL NOT NULL,
      regex_check BOOLEAN NOT NULL,
      CONSTRAINT website_metric_pkey PRIMARY KEY (website_id, metric_timestamp),
      CONSTRAINT fk_website FOREIGN KEY(website_id) REFERENCES websites(website_id)
  );
  