0fd8a116_st_with_Ron_Jacobs___Channel_9__Transcript
[Speaker] Martin [Start Time] 0:17:01.9 [Transcript] 
And just last week he and Scott Ambler released a book in my series perhaps on refactoring database. Which is all about how do you make these concern changes on databases and a lot of this kind of stuff is very similar. You want to be able to do things like add a column to a table and that’s obviously because of the nature of SQL itself is usually a non destructive change because if you add a column it doesn’t affect any of your SQL calls because you either a name what you have or you take it all that with *, and that has that same property but you are not breaking that was built in SQL.
ARCast - The Evolution of Architecture with Martin Fowler | ARCast with Ron Jacobs | Channel 9
Transcript