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Abstract

Based on the distinction between model and description in Resource Description and Access (RDA), the modeling and description of aggregate and component entities in RDA was examined. Guidelines and instructions related to such modeling were extracted from RDA and reconciled. After introducing additional assumptions, five possible model patterns of aggregate and component entities were developed. Then, the mapping between these model patterns and the manifestation types was clarified, revealing which model patterns are applicable to a given type of manifestation. Finally, RDA instructions on descriptions for aggregates/components were examined, and it was clarified that they do not have any conflict with the modeling.

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Abstract

This study aims to model the resource description tasks that are performed by catalogers. First, a model of authority data creator tasks is derived from Functional Requirements for Authority Data (FRAD), since FRAD partially includes such task modeling. Second, modeling of resource description tasks in line with Resource Description and Access (RDA) is conducted to cover the whole resource description tasks including those on descriptive data as well as those on authority data, and also to reflect RDA instructions as much as possible. Third, the modeling of resource description tasks is compared with that of user tasks in order to understand their differences.

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Abstract

Purpose - The purpose of this paper is to present functional requirements for bibliographic records (FRBR)-based model and functional requirements for authority data (FRAD)-based model; both of which incorporate an event concept that transforms FRBR and FRAD with minimal modification. Design/methodology/approach - Relationships between the entities defined in FRBR/FRAD are transformed into event entities and relationships with other kinds of entities. The cardinality of those relationships is also examined. In addition, a comparison of the proposed FRBR-based model with the object-oriented FRBR (FRBROO) is conducted. Findings - In the proposed event-aware FRBR model, an event and its output resource are dependent on each other and necessary information about an event can be expressed with information about its output resource, and vice versa. Therefore, the usefulness and expressiveness of the proposed model is limited. In the FRBROO model, dependency between an event and its output resource is not observed, except in a few cases, since a different resource and event modeling was adopted there. The event-aware FRAD model proposed is useful - but also the scope of its usefulness limited since dependency between an event and its input/output resource is not observed on some event entities. Originality/value - The proposed models are meaningful in terms of understanding the basic structure and features of a model that incorporates an event concept. The usefulness and limitation of event modeling have been clarified through such model building. The proposed models provide a stable basis for examining FRBR/FRAD further.