datatable.directory/database/migrations/2018_07_12_185840_create_table_favourites_table.php

<?php

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateTableFavouritesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('table_favourites', function (Blueprint $table) {
            $table->unsignedInteger('user_id')->index();
            $table->unsignedInteger('table_id')->index();

            $table->foreign('user_id')->references('id')->on('users')
                ->onDelete('cascade');

            $table->foreign('table_id')->references('id')->on('tables')
                ->onDelete('cascade');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('table_favourites');
    }
}