text: const { seq } = require('./common'),
        { DataTypes } = require('sequelize');
  
  const attributes = {
    author_id: {
      type: DataTypes.INTEGER,
      allowNull: false
    },
    book_id: {
      type: DataTypes.INTEGER,
      allowNull: false
    }
  };
  
  module.exports = seq.define('author_book', attributes);
  