42 Part I: Getting Started with WMI
additional functionality to the consumer application that uses its services. In this manner, pro-
viders hide all the details involved in obtaining the information you need. You simply make
the appropriate call and retrieve the desired information. An example can help clarify this:
when I was in the Navy, we had an interface into the Engineering department called Damage
Control Central (DC Central). DC Central was available 24 hours a day and was a single
phone number we could call to learn the current status of all engineering functions, including
the status of all boilers, how much fresh water we had, how much electricity was being pro-
duced, and so forth. If we did not have this interface, we would