Let's see. You need to deal with multiple database management systems. At the same time, you want to be flexible and effective at handling a broad range of database development, management, and administration tasks. Most importantly, you don't have any time to waste on stitching together a large and consistent toolset that would fully meet your needs—and surely you don't want to spend much time learning how to use it. You just want to start being versatile and productive at once.