HBase
HBase is the Hadoop database. HBase is designed to provide random read/write access to your data in real time. HBase is an open-source, column-oriented database that is based on Google's BigTable.
HBase Architecture
Querying HBase
In this 4 minute video, Jeremiah Peschka demonstrates how to query HBase using the Toad for Cloud Eclipse Plug-in.
http://facility9presentations.s3.amazonaws.com/HBase%20Basic%20Querying.mov