Rock is a popular building material in other Helsinki monuments, particularly churches, for example, the Uspenski Cathedral on the rock and the Tempppeliaukio Church cut into solid rock. Aided by smaller group sizes, the BOF groups made significant progress on the three key issues under consideration at the workshop. The Dublin Core Metadata Element Set is a set of 15 elements which are deemed to be 'core' to the resource discovery process of document-like objects in networked environments such as the Internet. These elements can be used together to create a metadata record to describe networked material in much the same way the a catalogue record describes traditional text resources in a library. All elements are optional.
All elements are repeatable.
Last but not least, all elements are extensible in that there meaning can be refined, for example an author might be an 'person' or an 'organisation'. Each successive workshop has refined the original standard, with participants coming from around the world and across the entire spectrum of the information sciences community. The development of consensus for Dublin Core is also continued through the exchange of ideas and information through the meta2 mailing list . The first workshop established a set of 13 metadata elements known as the Dublin Core. The second workshop resulted in the Warwick Framework , a conceptual framework for the co-existence of different metadata formats, and so named because of the workshop's location in Warwick, England.