Recently I've been having to research database indexing which has led me to find a large amount of answers on the topic on StackOverflow.
However when I had my own question that needed asking. I was unsure of which StackExchange site it best belonged on. Although, in the end, I did opt for Database Administrators.
This Meta discussion does suggest that questions on Indexing would be on-topic for StackOverflow how ever as pointed out by gbn in the answers, the other answers are now quite out of date.
Although my assumption is that DBA is the correct place, due to the fact there is a migration path to the site, it seems Meta lacks a categoric answer currently. What is the actually the current policy?
If I had asked my question on StackOverflow, would it have been correct to flag it for migration?