Laravel migrate

public function up(): void
{
    Schema::create('employees', function (Blueprint $table) {
        $table->id();
        $table->foreignId('country_id')->constrained()->cascadeOnDelete();
        $table->foreignId('state_id')->constrained()->cascadeOnDelete();
        $table->foreignId('city_id')->constrained()->cascadeOnDelete();
        $table->foreignId('department_id')->constrained()->cascadeOnDelete();
        $table->string('first_name');
        $table->string('last_name');
        $table->string('address');
        $table->string('zip_code');
        $table->date('birth_date');
        $table->date('date_hired');
        $table->timestamps();
    });
}