I worked on a project where we would generate XML representations of both databases and then use XSLT style sheets to display the differences. What I like with

I worked on a project where we would generate XML representations of both databases and then use XSLT style sheets to display the differences. What I like with this approach is thay you can start with a very simple XML schema and extend it as the need arises. Also you can compare DBs from different vendors as long as you can generate the XML.