rake db:dbdata:load

I haven't tried it yet, but does anyone have experience with something
like:

Dump the DB: "rake db:dbdata:dump"
Load the DB: "rake db:dbdata:load"

http://webchicanery.com/2007/08/22/rake-database-dump/

I'd like to use the "load" feature to load data from CSV. Would that
be a good usage?

thanks,

Thufir