Correct, and thank you. I wrote LMDB, wrote a lot of OpenLDAP, and worked on BerkeleyDB for many years. And actually Andy Pavlo invited me to CMU to give a lecture on LMDB a few years back. https://www.youtube.com/watch?v=tEa5sAh-kVk
Andy and I have had this debate going for a long time already.
Yes, LMDB is an embedded key/value store but it can be used as the backing store of any other DB model you care for. E.g. as a backend to MySQL, or SQLite, or OpenLDAP, or whatever.