A representação descritiva nas perspectivas do século XXI um estudo evolutivo dos modelos conceituais

The descriptive representation or cataloging is seen as a multidimensional decision process that structures and standardizes the different aspects of an information item, making it unique and subject to recovery and use. This article emphasizes the study of descriptive representation where the main objective is to analyze some conceptual models and their evolution with respect to representation of information. It also presents its features in dealing with current proposals and trends in the twenty-first century, showing the importance of each conceptual model and its possibilities of integration into virtual environments. The aim is to survey and analyze the main conceptual models used by the Library and Information Science. The results allow a broad view about the development of conceptual models and an understanding of descriptive representation in the current context of network technologies, which presents agile, simple and constantly updatable. Other contributions can be identified, such as improving the understanding of descriptive representation area, their relationships and models and provide subsidies to assist the information scientist in the representation of realit