```php
<?php

require_once dirname(__DIR__) . '/inc/Config.php';

class Database
{

  private static $_instance;
  private static $_db_name;
  private static $_db_user;
  private static $_db_pass;
  private static $_connection;

  function __destruct()
  {
    $this->_connection = null;
  }

  public static function getInstance()
  {
    if (static::$_instance == null) {
      static::$_instance = new static();
    }

    if (static::$_connection == null) {
      try {
        static::$_db_name = Config::$db_name;
        static::$_db_user = Config::$db_user;
        static::$_db_pass = Config::$db_pass;
        static::$_connection = new PDO('mysql:host=sql9.freesqldatabase.com;dbname=' . static::$_db_name, static::$_db_user, static::$_db_pass, array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8"));
        static::$_connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
      } catch (PDOException $ex) {
        die('FATAL ERROR: ' . $ex->getMessage());
      }
    }

    return static::$_instance;
  }

  public static function getConnection()
  {
    if (static::$_instance == null) {
      static::getInstance();
    }

    return static::$_connection;
  }

  public static function tableExists($table)
  {

    if (static::$_instance == null) {
      static::$_instance = new static();
    }

    if (static::$_connection == null) {
      try {
        static::$_connection = new PDO('mysql:host=sql9.freesqldatabase.com;dbname=' . static::$_db_name . ';charset=utf8', static::$_db_user, static::$_db_pass);
        static::$_connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
      } catch (PDOException $ex) {
        die('FATAL ERROR: ' . $ex->getMessage());
      }
    }

    try {
      $result = static::$_connection->query("SELECT 1 FROM $table LIMIT 1");
    } catch (Exception $e) {
      return false;
    }

    return $result !== false;
  }

  protected function __construct()
  {
  }

  private function __clone()
  {
  }

  private function __wakeup()
  {
  }

}

?>
```