Inexpensive shared servers, like the one Open-Meta.org is using, include MySQL database software that you might be able to access from other servers or computers. But when you try to look up how to do this, you are likely to get instructions that are out-of-date and that appear more complicated than the process actually is.
In the last paragraph of my And how… post I mentioned using iframes to display something from another web site embedded inside this one. Here’s a sample of what this might look like, although in actual use you’d hide the red border. Here I display it so we can see the dimensions of the iframe and where it’s positioned on the page.