BookStack/database/migrations/2016_10_09_142037_create_files_table.php

<?php

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

class CreateFilesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('files', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');
            $table->string('path');
            $table->integer('uploaded_to');

            $table->boolean('external');
            $table->integer('order');

            $table->integer('created_by');
            $table->integer('updated_by');

            $table->index('uploaded_to');
            $table->timestamps();
        });
    }

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