There are several ways to call a database and display the data on an HTML page, but one common method is to use a server-side scripting language like PHP or Python to retrieve the data from the database and generate HTML code dynamically.

Here’s a basic example using PHP and MySQL:

1. Connect to the database:

$conn = mysqli_connect("localhost", "username", "password", "database_name");

2. Query the database:

$result = mysqli_query($conn, "SELECT * FROM table_name");

3. Loop through the result set and generate HTML code:

while ($row = mysqli_fetch_assoc($result)) {
    echo "<p>" . $row["column_name"] . "</p>";
}

4. Close the database connection:

mysqli_close($conn);

In this example, we connect to the database using the mysqli_connect() function, query the database using the mysqli_query() function, loop through the result set using a while loop and output HTML code using echo. Finally, we close the database connection using the mysqli_close() function.

Of course, this is just a basic example and there are many other things you might need to do when working with a database, such as handling errors, sanitizing input, and more. It’s also worth noting that there are other server-side scripting languages and database systems you could use, depending on your needs and preferences.