my-idlers/database/migrations/2022_12_02_000007_create_notes_table.php

<?php

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

return new class extends Migration
{
    public function up()
    {
        Schema::create('notes', function (Blueprint $table) {
            $table->char('id', 8)->primary();
            $table->char('service_id', 8)->unique();
            $table->text('note');
            $table->timestamps();
        });
    }

    public function down()
    {
        Schema::dropIfExists('notes');
    }
};