Käyttäjän BorisSchalk profiilikuva
@BorisSchalk
Maan Ukraine lippu Vinnytsia, Ukraine
Jäsen alkaen 24. toukokuuta 2018
2 Suositukset

BorisSchalk

Online-tilassa Offline-tilassa
I architect and develop great web/desktop applications and have more than 15 years of practical programming experience. I prefer object-oriented programming and test driven development and start every task with planning phase - requirements specification and estimation (huge time saver). Most used languages and technologies (both frontend and backend): C#, .NET, C/C++, VB, MS Access, MySQL, MS SQL, Oracle, PL/SQL And Wordpress, WooCommerce, Shopping Carts, WPF/Avalonia UI framework for multi platform, Entity framework, JavaScript, Html5, React.js, Redux, Node.js, ElectronJS, Laravel, AngularJS, jQuery, MongoDB, Python, Flask, PHP, Yii, Docker. A lot of experience with Amazon AWS stack and Azure Database administration/programming, Web scraping. Mobile App development: Xcode and Android Studio, Unity3D for iPhone, iPad, Android phone
$25 USD/hr
3 arvostelua
3.0
  • 100%Suoritetut työtehtävät
  • 100%Budjetin mukaisesti
  • 100%Ajallaan
  • N/AUudelleenpalkkaamisaste

Portfolio

Viimeaikaiset arvostelut

Kokemus

C# Developer

Jan 2012 - Mar 2018 (6 years)

Software Developer

Developer

Sep 2001 - Dec 2011 (10 years)

Software Engineer & Developer

Koulutus

Master of Science (M.S.)

1996 - 2001 (5 years)

Pätevyydet

Microsoft Certified Database Administrator (MCDBA) (2015)

Microsoft

Julkaisut

Integrating Description Logics and Relational Databases

In this paper, we compare description logics with relational databases with respect to their treatment of schema constraints, the languages used to express these constraints, and the approaches to query answering and constraint checking. We analyze different possibilities for defining the semantics of the constraints. Finally, we present several algorithms for checking constraint satisfaction for description logics with varying degrees of expressivity.

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