Datastore

Google Cloud Datastore is a highly scalable, fully managed NoSQL database service offered by Google on the Google Cloud Platform. Cloud Datastore is built upon Google's Bigtable and Megastore technology.

Connect with Google Datastore from Database Browser

To connect Data store, 

First step, is Authorization of user,  if you are  a authorized  user then you have to provide project id to connect Data store. 

Please check documentation for create project.

In Add-on to connect fire store,