izyim/database/migrations/2018_09_08_072451_create_companies_table.php

<?php

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

class CreateCompaniesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('companies', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name', 80);
            $table->string('marking', 80)->unique();
            $table->string('email', 80)->nullable();
            $table->string('wechat_id', 80)->nullable();
            $table->string('registration_no', 25)->nullable();
            $table->string('tax_no', 25)->nullable();
            $table->double('rate')->default(0);
            $table->timestamps();
        });
    }

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