Database Refresh Procedure

I need to frequently refresh my development and staging databases with production data. If anyone has a script to do this, I'd appreciate a pointer.

Alternatively, I believe I could just write a script that:

1. disables constraints (on target DB)
2. truncates the tables (on target DB)
3. imports the source data (to target DB, from source DB)
4. enables constraints (on target DB)

Am I leaving out anything obvious? Thanks.

-- 
John Bossert

In what concerns you much, do not think that you
have companions: know that you are alone in the world.

             -- Henry David Thoreau