Drupal integration with another Drupal DB?

I have two Drupal sites. Let's call them Site A and Site B.

Site A is a site where users can post ITEMS. So I have a content type called ITEM. Site B is a client's site. I want to be able to display the ITEMS from Site A on Site B. I don't want to have to import the content. Both sites are on the same server. I want the items that show on Site B to be the exact items 开发者_StackOverflowfrom Site A. In fact, it would be amazing if:

1. The items show in the content list
2. The user can edit content from Site A via Site B.

So my questions are:

1. Is there a module that can do this?
2. If not, is this a feasible way to go about it and should I start development myself?
3. Is importing and exporting the only route to go? (and then disabling the editing of those content types)

Thanks in advance.

Sounds like you should use domain module. I have only used it with subdomains, but it should be able to handle different tld as well.

You can use feedapi and feedapi mapper to sync nodes on site A and site B.