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Users will engage with services that provide materials quickly and with the least effort.
about a resource, with a prescribed order of preference, were not adaptable to resources without title pages or pages, and not suitable for resources that existed in a state of constant change. This quote succinctly expresses a typical contradiction in the RDA effort: the desire to continue the AACR tradition while acknowledging that a greater change is needed. More recently, library systems developers have worked hard to create a machine-readable library catalog that provided functionality beyond that of the analog card catalog, for instance by allowing keyword searching of all data in the catalog record. Some of these are machine-friendly encodings of cataloging data elements like the date of publication, not easily parsed from a textual description. The archival community and the museum community, who considered themselves marginalized by AACR2, might well return to the fold if RDA could break the bonds of the AACR2 legacy. One area where change is essential is in the area of library catalogs and cataloging. There are certainly other, equally compelling visions of what the future will look like for libraries, but what stays the same is the need for reusable data from others (as materials are combined "virtually" for delivery to users), as well as for more sustainable and efficient ways to describe these materials. Examples of legacy approaches abound in RDA. Because most catalogers do not understand how these techniques can easily enable human readable displays, they tend to insist that cataloger-created textual notes are still the preferred methodology, and must be prescribed in the rules. What follows is an analysis of some of the serious issues in the RDA drafts to date, issues that may spell failure for the future of library catalogs. The library catalog and its conventions, valued by libraries as both an inventory of regularly published items and as the sharing mechanism for catalog entries, does not have a means to respond to this new, more chaotic information environment. However, the possibilities for innovation in this standard are hindered by the limited vision of the JSC. The Functional Requirements for Bibliographic Records (FRBR), published in 1998, was an attempt to define a model of the current bibliographic universe that would enable a rationalized approach to cataloging practice in a multiple-version resource environment [ The RDA prospectus sets a serious limitation when it declares that "... the need to integrate data produced using RDA into existing files (particularly those developed using AACR and related standards) is recognized as a key factor in the design of RDA." Presumably the pressures on libraries and the call for breaking down traditional barriers were well known to the experienced and well-intentioned members of the Joint Steering Committee. To make an effective transition to the new reality, librarians need to undertake a broad analysis of how the changing information technology and our rapidly evolving information resources are changing user behavior. Descriptive rules based on predictable, stable and named "sources of information" (title pages, colophons, etc.) Work in this area has been taking place for at least a decade, starting in 1997 with the International Conference on the Principles and Future Development of AACR, held in Toronto [ 9 ]. Published in July 2010, RDA is now available, and certain libraries have started using it for their current cataloging workflow.

RDA (Resource Description and Access), the next generation cataloging code designed for the digital environment, is under development. The effect of computers and networks of information resources on the mission of libraries is still being debated, but the very existence of libraries in the future rides on their ability to respond to today's – and tomorrow's – technology. For the most part, it continues to be limited to the holdings of a designated library or group of libraries. They live in a highly interactive, networked world and routinely turn to Web search engines for their information needs. It is difficult, if not impossible, to make a meaningful separation between the nature of the holdings of the library, the characteristics of the user population that the library is mandated to serve, and the library catalog. The Dublin Core and IEEE LTSC, while not focused on catalogs, are interested in interoperability with the library world and in reusing the experience of libraries in their own arenas. Perhaps the strongest area of agreement between the CC:DA and the metadata communities is the concern about the lack of a top-down process, beginning with agreements about models and general principles for description and setting the stage for detailed extension by any specialized community.

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