OK to use both yum and rpm on same system?

[Bevan C. Bennett]

Ted wrote:
> Hi, I'm new to Linux and currently using rpm with FC1.  My questions are 
> about using both yum and rpm for package management on a single system:
> 
> 1. If I use yum to install package X, will rpm recognize package X is 
> now installed?

Yes.

> 2. Will rpm be able to update package X that was installed by yum?

Yes.

> 3. Is it bad practice to mix yum and rpm for package management on my 
> system?  In other words, if I begin using yum, does that mean I should 
> stop using rpm?

Nope. yum is effectively a 'friendly wrapper' around rpm (that does 
handy things like check various repositories and auto-calculate 
dependencies), but when it installs, updates, or removes packages it 
actually uses rpm to do it. They are completely safe to use interchangeably.