and providing a unified view of these data. The problem of integrating heterogeneous data sources is old and huge.<o:p></o:p></span><span style="font-size: 10pt; color: blue; font-family: 'Arial','sans-serif'">Semantic technologies can help to categorize data, thereby giving data meaning and allowing improved/simplified data integration. The ultimate aim is interoperability as defined by IEEE: </span><span style="font-size: 10pt; color: blue; font-family: 'Arial','sans-serif'">The ability of two or more sys