  The Virtual Observatory (VO) is becoming the de-facto standard for
astronomical data publication. However, the number of radio astronomical
archives is still low in general, and even lower is the number of radio
astronomical data available through the VO. In order to facilitate the building
of new radio astronomical archives, easing at the same time their
interoperability with VO framework, we have developed a VO-compliant data model
which provides interoperable data semantics for radio data. That model, which
we call the Radio Astronomical DAta Model for Single-dish (RADAMS) has been
built using standards of (and recommendations from) the International Virtual
Observatory Alliance (IVOA). This article describes the RADAMS and its
components, including archived entities and their relationships to VO metadata.
We show that by using IVOA principles and concepts, the effort needed for both
the development of the archives and their VO compatibility has been lowered,
and the joint development of two radio astronomical archives have been
possible. We plan to adapt RADAMS to be able to deal with interferometry data
in the future.
