text: exports.up = function (knex) {
    return knex.schema.createTable("words", (table) => {
      table.integer("id").primary();
  
      table.string("word");
  
      table.integer("level_id");
      table
        .foreign("level_id")
        .references("id")
        .inTable("levels");
    });
  };
  
  exports.down = function (knex) {
    return knex.schema.dropTable("words");
  };