text: CREATE TABLE Type (
    id INTEGER PRIMARY KEY,
    name TEXT
  );
  
  INSERT INTO Type (id, name)
  VALUES (
    1,
    "Kirja"
  );
  
  CREATE TABLE ReadingTip (
    id INTEGER PRIMARY KEY,
    title TEXT,
    author TEXT,
    isbn TEXT,
    type_id INTEGER NOT NULL,
    FOREIGN KEY (type_id)
      REFERENCES Type (id)
      ON DELETE RESTRICT
  );
  