1. Script File koneksi.php <?php $servername="localhost"; $username="root"; $password=""; $database="db_praktikdba"; $koneksi=mysqli_connect($servername,$username,$password); if(!$koneksi){ die("Gagal Koneksi:".mysqli_connect_error()); } if(!mysqli_select_db($koneksi, $database)) { echo "Tidak dapat menemukan database"; exit(); } ?>2. Script File index.php<html><head> <title>Halaman Utama</title></head><body><p...