Pulling certain bits of information across multiple sites

Hello everyone,

I’m new to multisite, and I hope it is exactly what I’m looking for. The questions revolves around whether one can pull information (via PHP) for one site that is hosted on another.

This is the situation:

I am building a site/set of sites which are all related – a front page (like a welcome page), an online catalogue of books, and a blog for articles by authors and news etc.

The catalogue part is up and running without trouble, and I don’t envisage any trouble setting up the blog as I want it. I had planned to configure these as subdomains of the main page.

What I want to be able to do is pull select information from both the catalogue and the blog on to the front page – new books and new articles for example.

Currently, information for the catalogue is entered via a form which generates custom fields, which are then pulled by a customised single.php to generate the pages automatically.

Is it possible to pull a few of these fields – say title, thumbnail, author – onto the front page?

Hope that makes some sort of sense!