Results 11 to 20 of about 611,314 (186)
IEEE Access, 2021 The relational database has become one of the mainstream tools for data storage and management. However, there are two main types of threats to relational databases: external attacks and internal tampering threats. In this paper, we focus on the internal
Jie Lian, Siqian Wang, Yanmiao Xie
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Relational Playground: Teaching the Duality of Relational Algebra and SQL [PDF]
, 2023 Students in introductory data management courses are often taught how to write queries in SQL. This is a useful and practical skill, but it gives limited insight into how queries are processed by relational database engines. In contrast, relational algebra is a commonly used internal representation of queries by database engines, but can be challenging
arxiv +1 more source
Which Category Is Better: Benchmarking Relational and Graph Database Management Systems
Data Science and Engineering, 2019 Over decades, relational database management systems (RDBMSs) have been the first choice to manage data. Recently, due to the variety properties of big data, graph database management systems (GDBMSs) have emerged as an important complement to RDBMSs. As
Yijian Cheng +4 more
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Temporal RDF Modeling Based on Relational Database [PDF]
Jisuanji kexue, 2022 With the increase of temporal data,the concept of temporal knowledge graph is popularized,and how to represent temporal knowledge graph efficiently has become an important research direction.Although resource description framework(RDF) is widely used in ...
HAN Xiao, ZHANG Zhe-qing, YAN Li
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KNOWLEDGE MODELING FOR A RELATIONAL DATABASE IN ONTOLOGY WEB LANGUAGE (OWL)
Tạp chí Khoa học Đại học Đà Lạt, 2017 This paper presents a knowledge modeling method by Ontology Web Language (OWL) for a relational database. The proposed method contains the rules for transforming data in a relational database into Ontology and Axioms for supplementing meaning of a ...
Huỳnh Tuấn Anh
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AN EMPIRICAL COMPARISON OF NEO4J AND TIGERGRAPH DATABASES FOR NETWORK CENTRALITY
Science Journal of University of Zakho, 2023 Graph databases have recently gained a lot of attention in areas where the relationships between data and the data itself are equally important, like the semantic web, social networks, and biological networks.
Bahzad Chicho +1 more
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Semantic query in a relational database using a local ontology construction
South African Journal of Science, 2012 Semantic Web refers to a Web of linked data in which data can be shared and reused, allowing more uses than the traditional ‘Web of documents’. However, most of the information on the Web is stored in relational databases and such databases cannot be ...
Saeed M.Sedighi, Reza Javidan
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AMANDA: A Middleware for Automatic Migration between Different Database Paradigms
Applied Sciences, 2022 In a world rich in interconnected and complex data, the non-relational database paradigm can better handle large volumes of data at high speed with a scale-out architecture, which are two essential requirements for large industries and world-class ...
Jordan S. Queiroz +7 more
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BMC Medical Informatics and Decision Making, 2017 Background The objective of this research is to compare the relational and non-relational (NoSQL) database systems approaches in order to store, recover, query and persist standardized medical information in the form of ISO/EN 13606 normalized Electronic
Ricardo Sánchez-de-Madariaga +6 more
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Automatic Conversion of Relational Databases into Ontologies: A Comparative Analysis of Protégé Plug-ins Performances [PDF]
International Journal of Web and Semantic Technology (IJWesT),
2016, 2016 Constructing ontologies from relational databases is an active research topic in the Semantic Web domain. While conceptual mapping rules/principles of relational databases and ontology structures are being proposed, several software modules or plug-ins are being developed to enable the automatic conversion of relational databases into ontologies ...
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