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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

A Trichotomy in the Complexity of Counting Answers to Conjunctive Queries [PDF]

open access: yes, 2015
Conjunctive queries are basic and heavily studied database queries; in relational algebra, they are the select-project-join queries. In this article, we study the fundamental problem of counting, given a conjunctive query and a relational database, the ...
Chen, Hubie, Mengel, Stefan
core   +3 more sources

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

Selective Laser Sintering Process Management Using a Relational Database [PDF]

open access: yes, 1999
With more and more materials used in the Selective Laser Sintering (SLS) process, it is becoming necessary to use a database to manage the process efficiently. In this paper, a relational database for the SLS process is described. The database includes
Gibson, Ian, Shi, Dongping
core   +1 more source

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

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

Distributed Model-Based Diagnosis using Object-Relational Constraint Databases [PDF]

open access: yes, 2006
This work presents a proposal to diagnose distributed systems utilizing model-based diagnosis using distributed databases. In order to improve aspects as versatility, persistence, easy composition and efficiency in the diagnosis process we use an ...
Gómez López, María Teresa   +3 more
core   +2 more sources

A relational dataflow database [PDF]

open access: yes, 1981
A model of a relational database system based on the principles of functional, data-driven computation is proposed. Relations (sets of data tuples) are represented as streams of values carried by independent tokens among operators of an unraveling ...
Bic, Lubomir
core   +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

Proposed Framework which Uses Object Oriented Principles in Relational Systems: Structure and Formating (Part 2) [PDF]

open access: yesInformatică economică, 2006
Our approach tries to overcome the limitations of so called “flat nature” of relational systems, in the actual context of actual relational database theories, database systems technologies and object oriented methodologies by proposing an MDA framework ...
Catalin STRIMBEI
doaj  

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