Laravel Database Transactions: Ensure Data Integrity

DB::transaction(function () {
    $user = User::create($data);
    $user->profile()->create($profileData);
    $user->notify(new WelcomeNotification());
});

DB::beginTransaction();
try {
    // Operations
    DB::commit();
} catch (\Exception $e) {
    DB::rollBack();
    throw $e;
}

DB::transaction(function () {
    // Operations
}, 5);