LMDB is a storage engine whereas SQLite is a small database. There is even a version of SQLite that used LMDB as the underlying storage engine: https://github.c

LMDB is a storage engine whereas SQLite is a small database. There is even a version of SQLite that used LMDB as the underlying storage engine: https://github.com/LMDB/sqlightning https://github.com/LMDB/sqlightning.