Centrally maintaining data structures and content is a difficult thing to do, and there really isn't a complete solution for Drupal (yet!). Central Things Manager is a module I've developed that attempts to do just that.
The key aims of this module:
This module is a work in progress and not yet ready for public consumption. The current feature list:
The screencast below intends to demonstrate the module in its current state against a dev copy of The University of Queensland's new News website. I'm currently working on a more generic, open source version of this module with support for any TripleStore. I'll get a sandbox project up for it shortly. If there's demand I'll also post a follow-up blog with technical information about this implementation.