text: CREATE TABLE "definition" (
    "id" SERIAL PRIMARY KEY,
    "author_id" varchar(36) REFERENCES users(id) ,
    "category_id" integer REFERENCES category(id),
    "category_letter_id" integer REFERENCES category_letter(id),
    "title" varchar(75),
    "description" text,
    "exemple" varchar,
    "published" boolean,
    "created_at" date,
    "updated_at" date,
    "up_votes" integer,
    "down_votes" integer,
    "vote_score" integer,
      FOREIGN KEY (author_id)
          REFERENCES users (id)
          ON DELETE CASCADE,
      FOREIGN KEY (category_id)
          REFERENCES category (id)
          ON DELETE CASCADE,
      FOREIGN KEY (category_letter_id)
          REFERENCES category_letter (id)
          ON DELETE CASCADE
  );