Metadados para a descrição de recursos da Internet: o padrão Dublin Core, aplicações e a questão da interoperabilidade

• Autor(a) principal: Grácio, José Carlos Abbud [UNESP]
• Data de Publicação: 2002
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/93722
• topic: Ciência da informação; Recuperação da informação; Sistemas de recuperação da informação; World Wide Web (Sistema de recuperação da informação); Metadados; Dublin Core; Interoperabilidade; Metadata; Interoperability

Advances in Science and Technology, particularly in computing science and telecommunication, have made the Internet one of the most important sources of information. At the same time, the lack of adequate data about the resources available on the Web calls for the need to create descriptive elements which may contribute to represent such resources. In this sense, the development of metadata seems to be the best solution to the problem. Metadata are a set of elements designed to describe the information of a resource, thus allowing its search and retrieval. This work presents a discussion of metadata, how they work on the Web, the existing standards and their use, the concepts found in various domains, the characteristics and structure of the Dublin Core standard used to describe the Web resources, and also a study of several projects adopting metadata. The analysis of the projects shows that the Dublin Core standard, which is a 15-element set of descriptors, has been widely used for its simplicity, extensibility and interoperability. The latter characteristic is an important requirement when considering the various metadata standards currently in use, since their correspondence is fundamental to information exchange. The results obtained indicate that metadata studies lead to interoperability among the existing standards and their representation by markup languages like XML, as well as RDF architecture.