Fedora (14) : Source packages are installed to /root/rpmbuild/SOURCES/,
when you use root to install. ( su ).
If you have the recommended rpmbuild account in /home/<name>/rpm*
.. and do as unprivileged user $ rpm -Uvh <source-package.src.rpm>,
the files are unpacked to /home/<name>/rpms/SOURCES/.
No source packages get an entry in the rpm data base.
Hence no reply from 'rpm -qa'.