How do I offer database read and write functions over the internet?

I have a very simple database design. I would like to offer read and write funtionality over the internet to end users. I have some programming skill but would like the most simple solution, without paying for an expensive RAD tool.

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia��).