My personal long-standing wish is querying categories, in which the pages have the same infoboxes, by the fields in the boxes. Preferably without waiting to download dozens or hundreds of pages first.
The infobox→Wikidata integration would pretty much solve that (not the other way around), and I'm told that the Wikidata Bridge project aims to do that integration: https://www.mediawiki.org/wiki/Wikidata_Bridge
However, if someone made a different database that would be queryable tomorrow, I wouldn't mind.
Thanks, but this sounds like it only says what subcategories and, perhaps, pages are in the categories—but doesn't contain any data from the pages themselves. My main target is kinda-structured data from infoboxes—e.g. genre, platform, year for videogames. I don't even need categories particularly—I just grab all pages from them, hoping that all the pages I would want are in these categories.
Hmmmm, indeed. Considering that I've heard of DBpedia before my attempts with Wikidata, I now wonder why I didn't use it. Gonna check what they know about subjects that interest me.
The infobox→Wikidata integration would pretty much solve that (not the other way around), and I'm told that the Wikidata Bridge project aims to do that integration: https://www.mediawiki.org/wiki/Wikidata_Bridge
However, if someone made a different database that would be queryable tomorrow, I wouldn't mind.