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/e30d7685744a7c83e00e34883b4caa13098c6dd4580c70b9313f50e8b8c0aee4-primary.sqlite.bz2
This package provides help document for deltarpm.