The rpm command just updates its database to show the current state of installed packages. It doesn't keep track of the actions performed. For that you need to use yum, which appends Installed/Erased/Updated lines to /var/log/yum.log and keeps more detailed information available by running "yum history ...".
That's just one more reason why you should really be using yum (or it's more recent replacement, dnf) and not invoking rpm directly. There are very few install/remove/update situations that require invoking rpm directly. Using rpm for query or verification actions is of course OK.
Last edited by rknichols; 05-03-2016 at 01:18 PM.