text: CREATE TABLE IF NOT EXISTS todo (
      todoid      INTEGER  PRIMARY KEY AUTOINCREMENT
                           NOT NULL,
      description STRING   NOT NULL,
      datestarted DATETIME,
      completed   BOOLEAN,
      userid      INTEGER  REFERENCES users (userid) 
                           NOT NULL
  );
  
  CREATE TABLE IF NOT EXISTS users (
      userid   INTEGER PRIMARY KEY AUTOINCREMENT
                       NOT NULL,
      username STRING  NOT NULL
  );
  