\section{Applications}

With endpoints in place, we can now query the ULO/RDF
data set. Depending on the kind of application, different interfaces
and approaches to querying the database might make sense.

For integrating the ULO/RDF data set into an existing application, it
probably is reasonable to directly query the data set using RDF4J.
That is, of course, assuming the existing co debase is based on the
{JVM}.  If that is not the case, generating SPARQL queries is the
obvious choice.

The advantage of this approach is that connecting and interacting
with the database is straightforward. The disadvantage is that this
approach requires a deep understanding of structure of the underlying
ULO triplets.

\subsection{A Language for Organizational Data}

ULO/RDF is a subset of RDF. While it can be queried as just standard
RDF data, maybe it is helpful to design a query language only for
ULO/RDF triplets. Expressions in this particular query language could
then be converted to SPARQL or RDF4J expressions. Ideally this means
that (1)~the query language is intuitive and easy to use for this
specific use case and (2)~execution is still fast as the underlying
SPARQL database is already very optimized.