I am trying to learn Pivotal GemFire. Pivotal GemFire is the in-memory data grid. How do you view data saved in Pivotal GemFire? Does it have any UI or any database tool like we have for MySQL, Oracle, etc?
Yes, of course, you should read up on Pivotal GemFire's Pulse tool, which is a Web application that allows you to both Monitor and Query (using OQL) data contained in Pivotal GemFire Regions.
See the Using Pulse Views and more specifically the "Data Browser" view (scroll down or search for "Data Browser" on the "Using Pulse Views" page).