Thanks for the link, though I find the information about the project a bit sparse. For example, I'd be interested to know what the expected/intended use cases are for such a database and what exactly does "embedded" mean in this context.
From the article you linked, the teaser for LevelDB is really:
"It is an embedded database, i.e. one you use directly in your programming language and it runs in the same process as your program. The interface is a key-value store."
This is the closest I could find: https://code.google.com/p/leveldb/