Digital repositories in distributed information systems
Kovyazina Elena Vasilyevna
Institute of computational modeling SB RAS
Digital repositories of open access was one of the fundamental elements of the infrastructure of the open science. The software used for their implementation built on java or xml technology mainly is freely distributed and constantly actualizarea in accordance with the trends of technology. As the base schema of the data repository serves the Dublin core (DC) or Dublin core with qualifiers (QDC). The scheme is designed solely to provide basic search documents and copes with its functions. Unqualified Dublin core, in particular, is used for the aggregation of data repositories in some projects, such as the "national aggregator of open repositories" (NORA). Bibliographic description of the document in Dublin core exists as a field within the bibliographic references, the level of detail inside which is defined entirely by the owner of a separate repository. To create specialized collections, such as theme or Museum, as well as the development of cris systems based on the repository used in practice extend the base schema. In international practice there are a number of standardized or recommended extension schema, such as mods or dc-lib, to varying degrees, meet the library community on the content. The software repository provides the conversion data repository to a common schema using xslt mapping. In the national repositories, the schema extensions are created by holders of information resources for corporate needs, as a rule, without taking into account existing international standards and current recommendations of the professional community. This arrangement creates the problem of conversion of data between repositories and library systems, and significantly limits the possibility of integration of repositories in distributed information systems. Problem solving requires concerted action by the professional community and the work of the joint and are compatible with solutions offered by the international community in the process of developing the infrastructure of the open science.