Quick note: the installation instructions on the DataVirt page indicate the JBoss Data Virtualization tools should be installed from

https://devstudio.jboss.com/updates/7.0-development/integration-stack/

The getting started video #1 indicates tools should be installed from here:

http://download.jboss.org/jbosstools/updates/development/kepler/integration-stack/teiiddesigner/8.3.0.Beta1/

Both links work. 

• The https://devstudio.jboss.com/updates/7.0-development/integration-stack/  update site contains tooling for other components in addition to Data Virtualization.  This site will be refreshed periodically with tooling updates so you can use Eclipse Help->Check for Updates functionality to get the latest updates anytime. 
• The http://download.jboss.org/jbosstools/updates/development/kepler/teiiddesigner/8.3.0.Beta1/  update site contains only the Data Virtualization tools and will not be updated after Beta.

-Ken