You think?  What about if you want to go from a CHAR column to a VARCHAR column or a VARCHAR column to a TEXT column?  Does it really seem necessary...

I've also used a convention like that Steve.  In my last development group, we prefixed parameters with a "p", local variables with an "l" and member variables with an "m". ...

That, and the fact that in an object oriented world, hungarian notation no longer makes sense.  Everything (pretty much) is an object.  Are you going to put obj before every...