Is this a good definition of schema migration?

I'm trying to preserve the meaning of the English word 'migration' in the definition, and I think I might be able to do that without making up a fake definition. Here goes: > A schema migration is the change of a database's schema from one **state** to another through time, as is distinct from the more general definition of data migration, in which data is moved from one **location** to another. Anyway, this is basically original research, because it's hard to find these kinds of definitions sometimes. So I'd really appreciate some expert feedback.