User blog comment:Junior admin/InfoboxBuilder, the easier and faster way to create infoboxes/@comment-3271569-20140620135459/@comment-166269-20140620140323

There are already a few implementations of a database storage/retrieval system for MediaWiki; probably the most well-known is Semantic MediaWiki, a fairly powerful set of extensions allowing you to store values in properties and then query the properties and values to automatically generate lists. Unfortunately, because the extension is not very efficient at Wikia's scale, new requests to have it enabled are not currently granted.

The other major system I know of is the WikiData project used by Wikimedia wikis, though that's geared much more towards sharing data between wikis rather than allowing it to be more easily reused on the same wiki.