This started with MySQL 5.7.12 and its new Document Store Functionality. The X Plugin extends MySQL Server to be able to function as a document store and the X Protocol, which is designed to expose the ACID compliant storage abilities of MySQL as a document store. Documents are stored in JSON format and enable schema-less storage. Using the X DevAPI you can use a NoSQL-like syntax to execute Create, Read, Update, Delete (CRUD) operations against these documents. The server will be listening to port 33060 (configurable) for communications in the new protocol.
source http://elephantdolphin.blogspot.com/2016/04/the-new-mysql-x-devapi-protocol-and.html
What happens when you create a MySQL Document Store
http://elephantdolphin.blogspot.com/2016/04/what-happens-when-you-create-mysql.html
MySQL for Visual Studio 2.0.2 has been released
http://insidemysql.com/mysql-for-visual-studio-2-0-2-has-been-released/
source http://elephantdolphin.blogspot.com/2016/04/the-new-mysql-x-devapi-protocol-and.html
What happens when you create a MySQL Document Store
http://elephantdolphin.blogspot.com/2016/04/what-happens-when-you-create-mysql.html
MySQL for Visual Studio 2.0.2 has been released
http://insidemysql.com/mysql-for-visual-studio-2-0-2-has-been-released/