I just posted on-line a Demo (work in progress) of a tool for Schema Evolution support i designed and implemented during my stay in UCLA under the guidance of Carlo Zaniolo and with the collaboration of Hyun J. Moon.
Feel free to test it, criticize it, and report me feedback of any kind: Prism a tool for schema evolution (http://yellowstone.cs.ucla.edu/schema-evolution/index.php/PrismDemo)
A Video of a typical interaction with the interface is available at: Prism a tool for schema evolution (http://yellowstone.cs.ucla.edu/schema-evolution/documents/Prism-Demo.mov)
Let me know your opinions …