Hi,

As a beginner using Metronic, it's important to understand that Metronic is primarily an HTML theme, built with HTML, JavaScript, and CSS, designed to provide a visually appealing and feature-rich user interface (UI) for your web applications. However, it does not handle the actual functionality of the application, including database integration and the business logic of your system.

To build a complete web application using Metronic, you will need to have experience in end-to-end web development. Web applications usually consist of two main layers:

1) Design and Frontend UI : This is where Metronic comes in. It helps you create a stunning and responsive frontend user interface with pre-built components, layouts, and styles. You can customize and extend these templates to fit your specific project requirements.

2) Backend Implementation : This is the layer that handles the application's functionality, server-side logic, and database interactions. You can choose from various server-side languages like PHP, Java, Python, etc., and database engines like MySQL or Oracle to implement the backend of your application.

For PHP-based applications, you have a couple of options with Metronic:

1) Laravel and Symfony Starter Kits : Metronic provides starter kits for Laravel and Symfony, two popular PHP frameworks. These starter kits include pre-built code and configurations specific to these frameworks, making it easier to integrate Metronic into your projects. However, using these frameworks requires some knowledge and experience with them.

2) Plain PHP : If you prefer a more straightforward approach or are more comfortable with plain PHP, you can use traditional PHP functions like `mysqli_connect`, `PDO`, etc., to connect to your MySQL database and handle database operations. Here's an example of connecting to a MySQL database using `mysqli_connect`:

<?php
$servername = "localhost";
$username = "your_username";
$password = "your_password";
$dbname = "your_database_name";

// Create connection
$conn = mysqli_connect($servername, $username, $password, $dbname);

// Check connection
if (!$conn) {
 die("Connection failed: " . mysqli_connect_error());
}

echo "Connected successfully";
?>