text: CREATE TABLE author
  (
      id INTEGER PRIMARY KEY NOT NULL,
      name TEXT NOT NULL
  );
  CREATE UNIQUE INDEX index_author_id ON author (id);
  CREATE TABLE keywords
  (
      id INTEGER PRIMARY KEY NOT NULL,
      word TEXT NOT NULL
  );
  CREATE TABLE publications
  (
      id INTEGER PRIMARY KEY NOT NULL,
      title TEXT NOT NULL,
      year INTEGER NOT NULL,
      source TEXT,
      publisher INTEGER NOT NULL,
      description TEXT NOT NULL,
      isbn TEXT
  );
  CREATE TABLE publisher
  (
      id INTEGER PRIMARY KEY NOT NULL,
      name TEXT NOT NULL
  );
  