MySQL just announced a new document store called MySQL Document Store.
In this video, Mike Zinner, Sr. Software Developer Director at Oracle, introduces the recently-announced MySQL Document Store. MySQL Document Store allows developers to work with relational tables and schema-less JSON collections in parallel. To make that possible MySQL has created the X Dev API which puts a strong focus on SQL and CRUD by providing a fluent API allowing you to work with JSON documents in a natural way. The X Protocol is a highly extensible and is optimized for both SQL and CRUD API operations. MySQL Shell is an advanced command-line client that offers scripting capabilities for JavaScript and Python.