moell-blog/database/migrations/2016_09_10_113755_create_systems_table.php

<?php

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

class CreateSystemsTable extends Migration
{

	/**
	 * Run the migrations.
	 *
	 * @return void
	 */
	public function up()
	{
		Schema::create('systems', function(Blueprint $table) {
            $table->increments('id');
			$table->string('key');
			$table->string('value');
			$table->unique('key');
		});
	}

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

}