same thing the civilian world would do with such a database . . . .nothing. At the moment, the human genome is not useful as a medical tool, b/c it portrays too much information. It's like asking the patient to recount (for his History) everything that he's done, by the minute, throughout his entire life. It's just TMI, and we don't know where to begin with it. (Of course, we could use the genome to screen for mutations that cause known medical problems, but we already have such tests).
The proteome (the collection of proteins expressed by a human being) is actually more interesting and would probably have more predictive power (in terms of medication efficacy, side effects etc). We're decades away from mapping the entire genome to the proteome, and then utilizing that knowledge for personalized medicine. It'll happen someday (hopefully within our lifetimes), but it's gonna be a while (it's mainly a bioinformatics problem . . we'll have to let the nerdy math and computer science guys figure it out).