MayBMS is a state-of-the-art probabilistic database management system that has been built as an extension of Postgres, an open-source relational database management system. MayBMS follows a principled approach to leveraging the strengths of previous database research for achieving scalability. This talk describes the main goals of this project, the design of query and update language, efficient exact and approximate query processing, algorithmic and systems aspects, and applications, and gives an outlook at future work.