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foremost at providing better data access by creating additional access points within the original National Library dataset of the Bibliographic
Database. This aim is to be achieved by providing better data granularity and segmentation within this dataset stored in the MARC 21 Format by
using some additional MARC 21 properties – as-yet unused (or even unavailable within the format) – in bibliographic records, such as “Audience
Characteristics” (MARC 21 field 385), “Creator/Contributor Characteristics” (MARC 21 field 386) or “Time Period of Creation” (MARC 21
field 388). In the same way, in order to create additional access points to the authority data, a set of additional attributes has been defined based
on the additional MARC 21 fields added to the MARC 21 Format by the Library of Congress, such as “Associated Place” (MARC 21 field 370),
“Field of Activity” (MARC 21 field 372), “Associated Group” (MARC 21 field 373), “Occupation” (MARC 21 field 374), or “Gender” (MARC 21
field 375).
Looking ahead, the project implies not only providing and maintaining these additional access points within a library catalogue, but also
using the newly added attributes as additional relations – previously unavailable due to the lack of authority controlled access points – between
various entities stored within the database (such as Personal Names, Organisations, Geographic Names and Publications). Through
simultaneous efforts toward developing the Linked Data model corresponding with the National Library’s set of bibliographic data and publishing this data as the open RDF dataset, it is currently regarded that these additional relations could in the future provide further advantages
in combining the National Library dataset with other datasets available on the Web, as they can be relatively easily mapped to properties
and classes defined in the commonly used Semantic Web ontologies, in comparison to the data expressed in the information retrieval language
currently used by the National Library. They may also provide additional contexts for possible NER tool implementation that could be applied
to the digitised content of the National Digital Library. For the very same reason, the National Library Descriptors project implies simplification
of the controlled vocabulary used as the subject headings in the bibliographic database. It is understood that the transition to an effectively
integrated dataset requires accessible data structures and modelling of the data within the RDF schema in order to enable interlinking
with other data stores. The National Library Descriptors project is expected to provide a gradual approach to facilitate that result.1


1 zródło his concerns the number of libraries in: schools for children and youths; schools for adults; and arts schools based on the data from the Educational Information System, as of 30 September 2012, provided by the Department of Forecasts and Analysis of the Ministry of National Education.

2 zródło2 his concerns the number of libraries in: schools for children and youths; schools for adults; and arts schools based on the data from the Educational Information System, as of 30 September 2012, provided by the Department of Forecasts and Analysis of the Ministry of National Education.