If you look at the timeline for that question you will see an entry
bumped by community user
Some questions are occasionally "bumped" by the community user. See this meta answer
The Community user randomly bumps old, unanswered questions to bring them to the attention of users and [maybe] get them answered
Couchbase is a Document-Oriented NoSQL Database according to the title of their home page: that puts it on-topic, though of course the NoSQL market is more fragmented and more cutting-edge, meaning each DB has it's own niche and the pool of Q&A here may never be big.
It does seem to be related from a technology perspective to CouchDB, though not so ...
Your question is answered in the Stack Exchange FAQ:
How does deleting work? What can cause a post to be deleted, and what does that actually mean? What are the criteria for deletion?
You can typically delete your own posts at will; for exceptions, see When can’t I delete my own post? below. To delete a post, just use the delete link below it.
Not all closures will fall precisely into the exact interpretation of the wording jammed into generic close reason text. No matter how much we fiddle with that text, someone is not going to be happy that it didn't 100% accurately reflect the closure reason behind their question.
In this case, I'm not sure there's a more accurate close reason for "give me ...
Assuming the 'too trivial' premise is correct (if it is not, please disconsider), perhaps we could improve the close reason to:
"Too localized - this could be because your code has a typo, basic error, or it is not relevant to most of our audience, or is too trivial. Consider revising your question so that it appeals to a broader audience. As it stands,...
If you open up the Developer Console (F12) in Chrome and switch to the sources tab, you will find that some portions of the sites you are visiting are being serviced from different domains on the internet.
Here is a sample output of what the dba.meta.stackexchange.com site looks like source-wise:
I would have left the question to be answered in the future, if not for you, maybe for others.
I'll give you some reasons:
maybe in the future someone will habe the same problem and would be grateful for an answer
the question has already sparked some interest (the comments and the favorite show this), thus someone is interested in an answer