I have the the sense that the somewhat mathematical treatment of databases in relational form is decreasing in favor of the less structured NoSQL databases. I am not an expert in databases, but this feels like a hype that will be reversed some time in the near future.<p>What experience do you have in the topic?
It depends...<p>Some problems are easily solved with flat files.<p>Others require some level of organization, so you migrate to a database. Some problems are easily solved with noSQL, others require sophisticated query patterns not easily solved with noSQL (exceptions being through the use of,e.g. Hadoop and all manner of code gymnastics).