ONTOLOGIJA PRAVILNIKA ZA OPIS I PRISTUP GRAĐI U KNJIŽNICAMA, ARHIVIMA I MUZEJIMA.

Purpose. The purpose of this paper is to present the operational ontology of the Code for description and access to resources in libraries, archives, and museums - LAM Code (Pravilnik za opis i pristup građi u knjižnicama, arhivima i muzejima - KAM), version 1.0, 2021, as a complementary standard to the textual version of the LAM Code. Methodology. The introduction defines the concept of ontology and the RDF - Resource Description Framework model for description of resources as semantic linked data. This standard framework is used as a technical model for the LAM Code as well as for the conceptual models IFLA LRM, RiC and CIDOC-CRM, the implementation of which is the LAM Code. The second part of the paper consists of the short description of the ontologies used in the heritage sector, while the third, main part is dedicated to the detailed description of the LAM Code ontology as an operational ontology. Findings. The ontology of the LAM Code fully complies with its textual version. Certain adjustments were made to conform to the requirements of the ontology as an operational one. Limitations. The described ontology of the LAM Code has been adopted as a final version for testing in 2023, so some minor adjustments can be expected. To start using the ontology it is necessary to publish it in the official registry of namespaces, preferably a national one. Practical implications. The implementation of the LAM Code ontology is seen in encoding metadata for machine processing in relational database or linked data environments, for the purpose of their content designation, storage, machine reasoning, retrieval and display, as well as for metadata exchange and re-use at the national and international levels. Social implications. The implementation of the LAM Code ontology is seen in enhancement and development of information systems, and interoperability of metadata in the heritage sector and with other stakeholders in a contemporary environment of information management at the national and international levels. Originality. The LAM Code ontology is the first operational ontology in the Croatian information heritage sector environment. [ABSTRACT FROM AUTHOR]