I think the FAQ needs another question: when should I prefer UnQLite over SQLite? When should I prefer SQLite over UnQLite?
1. sqllite is 'sql' interface, unQlit is k/v.
2. Sqlite uses btree, unQlite is linear hash( doesn't support range queries).
> UnQLite is a in-process software library which implements a self-contained, serverless, zero-configuration, transactional NoSQL database engine. UnQLite is a document store database similar to MongoDB, Redis, CouchDB etc. as well a standard Key/Value store similar to BerkeleyDB, LevelDB, etc.