c3lf-system-3/database/migrations/2019_11_14_232911_create_items_table.php

<?php

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

class CreateItemsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('items', function (Blueprint $table) {
            $table->bigIncrements('iid');
            $table->unsignedBigInteger('item_uid');
            $table->string('bezeichnung');
            $table->timestamp('wann');
            $table->string('wo');
            $table->unsignedBigInteger('eid');
            $table->unsignedBigInteger('cid');
            $table->timestamps();
            $table->softDeletes();

            $table->unique(['eid', 'item_uid']);

            $table->foreign('eid')->references('eid')->on('events');
            $table->foreign('cid')->references('cid')->on('containers');
        });
    }

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