What data storage does Bitcoin core use?

[tyz]

I researched for a blog post which database Bitcoin core use to store data. I found two contradictory sources.
The one says that the core uses LevelDB, the other says SQLite. What is right? 

[achow101]

Bitcoin Core uses LevelDB databases for the block indices. It uses Berkeley DB for the wallet. The actual Blocks themselves are just stored in the raw format that they are received with.