Hello Gintautas! Am 21.04.2017 um 17:58 schrieb Gintautas Sulskus: > I have a couple of questions regarding the Wiki Page ID. Does it always stay > unique for the page, where the page itself is just a placeholder for any kind > of > information that might change over time?
That is indeed the idea. COntent changes, the page ID stays the same. If you need to identify a specific state of the page, use the revision ID (aka permalink). Note however that page IDs are considered "internal" identifiers. They are stable, but they are not the canonical way to access or identify a page. Use the title for that - or, in the context of Wikidata, use the entity ID. > Consider the following cases: > 1. The first time someone creates page "Moon" it is assigned ID=1. If at some > point the page is renamed to "The_Moon", the ID=1 remains intact. Is this > correct? Yes, page IDs survive renaming/moving the page. > 2. What if we have page "Moon" with ID=1. Someone creates a second-page > "The_Moon" with ID=2. Is it possible that page "Moon" is transformed into a > redirect? Then, "Moon" would be redirecting to page "The_Moon"? Yes, pages can become redirects. > 3. Is it possible for page "Moon" to become a category "Category:Moon" with > the > same ID=1? Yes, pages can be moved into the category namespace. -- Daniel Kinzler Principal Platform Engineer Wikimedia Deutschland Gesellschaft zur Förderung Freien Wissens e.V. _______________________________________________ Wikidata mailing list Wikidata@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidata
