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Hierarchical Semantic Database Structure of the E-Learning Systems
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Author(s): Nikita Vanyasin (Volga State University of Technology, Russia)
Copyright: 2016
Pages: 7
Source title:
Handbook of Research on Estimation and Control Techniques in E-Learning Systems
Source Author(s)/Editor(s): Vardan Mkrttchian (HHH University, Australia), Alexander Bershadsky (Penza State University, Russia), Alexander Bozhday (Penza State University, Russia), Mikhail Kataev (Tomsk State University of Control System and Radio Electronics, Russia & Yurga Institute of Technology (Branch) of National Research Tomsk Polytechnic University, Russia)and Sergey Kataev (Tomsk State Pedagogical University, Russia)
DOI: 10.4018/978-1-4666-9489-7.ch024
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Abstract
During designing a software system iSpring Cloud (iSpring Solutions Inc.) there was a problem of persisting structures of folders and files uploaded by users of the system. Structure of folders and files uploaded by user is actually the semantic network with hierarchical relationships “folder (ancestor) - file (descendant)”. Thus, here arises a problem of semantic hierarchical networks storage method for a large number of users in a relational database (and in such data structures that would be suitable for quick hierarchy extraction using relational algebra operations).
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