Results 21 to 30 of about 36,093 (262)

Mining Relational Databases [PDF]

open access: yes, 2000
In this paper, we propose a classification system to induce an intentional definition of a relation from examples, when background knowledge is stored in a relational database composed of several tables and views. Refinement operators have been defined to integrate in a uniform way different induction tools learning numeric and symbolic constraints ...
Frédéric Moal   +2 more
openaire   +1 more source

Examining database persistence of ISO/EN 13606 standardized electronic health record extracts: relational vs. NoSQL approaches

open access: yesBMC 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
doaj   +1 more source

Oracle 19c, SQL Server 2019, Postgresql 12 and MySQL 8 database systems comparison

open access: yesJournal of Computer Sciences Institute, 2020
This article presents a comparative analysis of four popular database technologies. Commercial Oracle Database and SQL Server systems are compared with open source database management systems: PostgreSQL and MySQL.
Arkadiusz Solarz, Tomasz Szymczyk
doaj   +1 more source

Beyond relational databases [PDF]

open access: yesCommunications of the ACM, 2008
There is more to data access than SQL.
openaire   +1 more source

The relational database system of KM3NeT

open access: yesEPJ Web of Conferences, 2016
The KM3NeT Collaboration is building a new generation of neutrino telescopes in the Mediterranean Sea. For these telescopes, a relational database is designed and implemented for several purposes, such as the centralised management of accounts, the ...
Albert Arnauld, Bozza Cristiano
doaj   +1 more source

Structuring, Recording, and Analyzing Historical Networks in the China Biographical Database

open access: yesJournal of Historical Network Research, 2021
The China Biographical Database (CBDB) is a relational database of over 450,000 individuals from pre-modern Chinese history. CBDB is distinctive as a prosopographical database in that it allows users to generate kinship and social networks for ...
Michael Fuller, Hongsu Wang
doaj   +1 more source

RELATIONAL ASPECTS OF RELATIONAL DATABASE DEPENDENCIES [PDF]

open access: yesBulletin of informatics and cybernetics, 2000
Summary: This paper presents a relational treatment of inference rules for functional and multivalued dependencies in relational databases, to show the soundness and the completeness of the inference rules in Dedekind categories, which also cover the fuzzy case.
Okuma, Hitomi, Kawahara, Yasuo
openaire   +2 more sources

Predicting Customers Churn in a Relational Database [PDF]

open access: yesInformatică economică, 2014
This paper explores how two main classical classification models work and generate predictions through a commercial solution of relational database management system (Microsoft SQL Server 2012). The aim of the paper is to accurately predict churn among a
Catalin CIMPOERU, Anca Ioana ANDREESCU
doaj   +1 more source

Field Report from Collaborative Research Center 1625: Heterogeneous Research Data Management Using Ontology Representations

open access: yesAdvanced Engineering Materials, EarlyView.
A unified research data management framework for heterogeneous materials data is presented. The system integrates multimodal datasets using ontologies and knowledge graphs, enabling interoperability and FAIR (findable, accessible, interoperable, reusable) data principles. By linking data across scales and workflows, it supports reproducible, Artifitial
Doaa Mohamed   +6 more
wiley   +1 more source

Fostering Innovation: Streamlining Magnetocaloric Materials Research by Digitalization

open access: yesAdvanced Engineering Materials, EarlyView.
Magnetocaloric cooling (MCE) is an environmentally friendly refrigeration method with great potential. Optimizing MCE materials involves the preparation and screening of large quantities of samples, which in turn generates a large amount of data. A digitalization approach is presented that uses ontologies, knowledge graphs, and digital workflows to ...
Simon Bekemeier   +17 more
wiley   +1 more source

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