when do we use db:transaction laravel code example

Example 1: laravel db transaction

DB::beginTransaction();

try {
    DB::insert(...);
    DB::insert(...);
    DB::insert(...);

    DB::commit();
    // all good
} catch (\Exception $e) {
    DB::rollback();
    // something went wrong
}

Example 2: transaction laravel

DB::beginTransaction();
try { /** Statement */   DB::commit(); } 
catch (\Exception $e) { /** Statement if failed */ DB::rollback(); }