Smart Library as an archetype of future library systems is presented in this paper. Smart Library is an innovative system converging the cuttingedge information technology. The functional requirements of Smart Library Systems by considering the users' demands and the ecosystems of information technology is described. The referential framework that can accommodate functional requirements and provide smart knowledge services to the users through the diverse smart devices is also shown.

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Graphs provide an effective way to represent information and knowledge of real world domains. Resource Description Framework (RDF) model and Labeled Property Graphs (LPG) model are dominant graph data models widely used in Linked Open Data (LOD) and NoSQL databases. Although these graph models have plentiful data modeling capabilities, they reveal some drawbacks to model the complicated structures. This paper proposes a new property graph model called a universal property graph (UPG) that can embrace the capability of both RDF and LPG. This paper explores the core features of UPG and their functions.

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