Yandex will host a meeting devoted to MongoDB. This is a document-oriented database with open source, does not require description of the table schema.
MongoDB invites experienced users and everyone who wants to get acquainted with this database to this event.
There are two presentations: Asya Kamsky from MongoDB: What's new in 2.6 followed by an interactive Q&A discussion. Andrey Godin from Yandex: Using MongoDB as the main metabase UGC-services
Please note you *must* register via the site - http://tech.yandex.ru/events/yagosti/mongodb/ for your attendance at this event