The purpose of this master thesis is to examine how Dublin Core corresponds to the findings in the IFLA report Functional requirements for bibliographic records FRBR, and what consequences this correspondence has on the usability of Dublin Core as a bibliographic standard. While the study describes the conceptual model of FRBR and the entities work, expression, manifestation and item, its main focus is the mapping of attributes and relationships to the user tasks defined, namely to find, identify, select and obtain entities. The study makes a comparison between data that FRBR rates as highly important for any user task, and the elements defined in DCMI Metadata Terms. The outcome of the comparison is then analyzed as to how it affects Dublin Core's possibilities to assist in the different user tasks, and common problems are discussed. The results show that problems in expressing attributes and relationships through Dublin Core elements concern all of the four user tasks. However, the problems seem less severe regarding the task of finding entities. Many problems are caused by the lack of direct matches between attributes and elements, and some seem to be due to Dublin Core's focus on electronic resources. By relating the results to other studies, and to a view of metadata as an intermediate level of description between professional cataloging and full text indexing, and by discussing the possibilities to extend Dublin Core, this study finds that deficient correspondence to FRBR is inevitable if the simplicity of Dublin Core is to be preserved.