deltarpm contains the difference between an old and a new version of an RPM package.
Delta RPM packages contain the difference between an old and a new version of an RPM package. Applying a delta RPM on an old RPM results in the complete new RPM. It is not necessary to have a copy of the old RPM, because a delta RPM can also work with an installed RPM.
acquired package info from repodata DB: repodata/60ea82253c2bf8471f2066e9299f2564f8940a0905f4bd052f796da897408437-primary.sqlite.bz2
This package provides help document for deltarpm.