Compass/compass/database/migrations/2019_05_12_123107_shares.php

<?php

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

class Shares extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('shares', function (Blueprint $table) {
            $table->increments('id');
            $table->unsignedInteger('database_id');
            $table->datetime('expires_at')->nullable();
            $table->string('token', 30);
            $table->datetime('created_at');
        });
    }

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