Page 142 - Building Digital Libraries
P. 142

Metadata Formats




















































                 FIGURE 6.6
                 DSpace Dublin Core Display

                 flexibility. Dublin Core recognizes that it does not cover the potential needs
                 of all users and is not sufficient for purposes other than simple resource
                 discovery—so the metadata schema itself has been designed to allow for
                 the creation of local extensions to meet local needs. However, unlike many
                 other metadata schemas, the addition of these local extensions does not
                 cause compatibility problems for Dublin Core, since metadata elements
                 can always be reduced down to the core fifteen unqualified elements. This
                 allows metadata implementers to customize the Dublin Core schema for
                 their own local usage without sacrificing the ability to share metadata with
                 other systems. For example, within DSpace, Qualified Dublin Core is uti-
                 lized when doing metadata creation so that information can be captured at
                 the highest level of granularity that Dublin Core provides.
                     Figure 6.6 provides a screenshot of a record within the Ohio State
                 University DSpace repository. Within the metadata, one can see how ele-
                 ments, like date, are being utilized with refinements to provide additional
                                                                                                                     127
   137   138   139   140   141   142   143   144   145   146   147