How RDMS, NoSQL, DocumentDB and so on are evolving

Found on blocksandfiles.com

" Two US academics have written a paper explaining and clarifying what has happened with database architectures, data models, and query languages.

“What Goes Around Comes Around… And Around…” is a 17-page opus that repays reading and study with a terrific understanding of how NoSQL came about, what a document database consists of, how text search engines from the 1960s prefigured today’s vector databases, and many other valuable insights. "

See original paper on db.cs.cmu.edu