Публикации

© Hristo Tujarov,

Stefan Kalchev,

Vassil Milev

Публикации

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Наименование	Автори	Място на публикацията
Data PER Model	Hristo Tujarov,Stefan Kalchev, Vassil Milev
Abstract: In this paper the model PER (Process Entity Relationships) for semantic data modeling is presented, based on process and architectural approach. Terms, symbols and conventions used are explained. The levels of the model were described, and some example models are given. Key words: Data Base, Data Modelling, Data Base Model, Information System, Enterprise Architecture.
3D МОДЕЛ НА АРХИТЕКТУРА НА ДАННИТЕ	Васил Милев	Международната конференция на тема: „Приложение на информационните и комуникационни технологии в икономиката и образованието”, 2 -3 декември 2011 г., УНСС, София
Резюме : Все по-бързо развиващата се среда, в която функционира бизнесът днес, поставя съвременното предприятие пред предизвикателството да съумява адекватно да реагира на промените, което от своя страна налага да се използва подходящ инструментариум за гъвкаво управление[1]. Именно като такъв инструментариум се разглежда придобиващата все по-голяма популярност в световен мащаб концепция за архитектура на предприятието[4]. В доклада се предлага 3D модел на архитектурата на данните, който е базиран на модела на Gartner [5]. Ключови думи: архитектурата на предприятието, архитектура на данните, подход PDCA, SID модел
ARCHITECTURAL APPROACH, BASED SYNCHRONIZATION BUSINESS AND INFORMATION TECHNOLOGY	Vassil B. Milev, Stefan Kalchev, Milena Stefanova	INTERNATIONAL SCIENTIFIC CONFERENCE MATHTECH 2010 Dedicated to the 130th Anniversary of Academician Kiril Popov’s Birth 19 – 21 NOVEMBER 2010 SHUMEN, BULGARIA
Summary: In this report attempst to clarify the substance of contemporary architectural approach and the related architectural processes. Particular attention is paid to the funding required to maintain this dynamic development and in line of business and IT. Key words: architectural approach to enterprise architecture, business architecture, architectural process, information technology.
COMPONENT MODEL OF THE ENTERPRISE ARCHITECTURE	Hristo Tujarov, Stefan Kalchev, Vassil Milev	Proceedings of the International Conference on Information Technologies (InfoTech-2010) 16-18 September 2010, Bulgaria
Summary: The purpose of this report is to present a component model corresponding to the modern concepts of enterprise architecture and to propose some new or modified components and semantic relationships. From a theoretical point of view the model is another attempt to define the framework and components of the enterprise architecture Keywords : Enterprise architecture, business architecture, system architecture, data architecture, application architecture, infrastructure architecture, business processes, information technology ,infrastructure technology
МОДЕЛ НА ЗРЯЛОСТ НА ИНФОРМАЦИОННИТЕ ТЕХНОЛОГИИ	Христо Тужаров, Стефан Калчев,Васил Милев	МЕЖДУНАРОДНА НАУЧНА КОНФЕРЕНЦИЯ ИНФОРМАЦИОННИ ТЕХНОЛОГИИ В УПРАВЛЕНИЕТО НА БИЗНЕСА 16 и 17.октомври 2009 – гр. ВАРНА, 2009
Резюме: Днес информационните технологии (ИТ) и бизнеса стават все по взаимосвързани От синхронизацията на степента на тяхната зрялост в голяма степен зависи успешното развитие на организациите. В доклада е представен модел на зрялост на информационните технологии, базиран на модела СММ (Capability Maturity Model) (5,10). Ключови думи: Enterprise Architecture, СММ ,Information Technology, IT architecture, IT services
METHODS FOR CREATION OF ENTERPRISE ARCHITECTURE	Vassil Milev, Stefan Kalchev, Hristo Tujarov	Proceedings of the International Conference on Information Technologies (InfoTech-2011) 16-18 September 2011, Bulgaria
Summary: The report presented a model for the description of an enterprise architecture. In this paper the components of the model are described and appropriate methodology are presented for its implementation. Methods that are described in the report optimized the process of Enterprise architecture. It allows for repeated use of architectural sollutions tested in practice. Developed Methods enables its efficient incorporation into the architecture of an enterprise. Keywords: enterprise architecture, data architecture, business processes, architecture framework , methodology.
Multiple dimensions of Enterprise architectural description	Vassil Milev
Summary: This report aims to examine the characteristics related to the multiple dimensions of architectural description and their influence on achieving the current requirements to develop a dynamic organization-real-time work, adequate response to the changing external environment and ceaseless improvement. Keywords: Architectural description , Subject areas and levels of maturity, Levels of decomposition
USING THE BUILDING BLOCKS FOR MODELING DATA	Vassil Milev	Proceedings of the International Conference on Information Technologies (InfoTech-2011) 16-18 September 2011, Bulgaria
Summary: Concept of “Building Blocks” has become in recent years as a leader in developing both the architecture of the enterprise as a whole and the individual components and − business applications, data and infrastructure. The report proposed approach of using “Building Blocks”, in developing the architecture of data and accurate in their modeling. The possibilities are described that offered the types of objects such as “Building Blocks”. Presented taxonomy is used for modeling the basic types of objects / entities, based on PER model . Here are concrete examples. We examined the practical applicability of the developed taxonomy. Keywords : enterprise architecture, data architecture, business processes, data modeling, architectural frameworks models, taxonomy.
АРХИТЕКТУРАТА НА ДАННИТЕ КАТО ФУНДАМЕНТ НА АРХИТЕКТУРАТА НА ПРЕДПРИЯТИЕ	Васил Милев, Стефан Калчев
Abstract: The report presents the role, place and objectives of the data architecture in enterprise architecture. They are examined in the light of the information architecture and business process requirements. Тhe roles of data architecture, basic principles, characteristics and development stages are described. It can serve as guidance material for IT departments which begin to implement projects in synchronization of business and IT [13, 14, 15, 18]. Keywords: Enterprise Architecture, Information System, Date Architecture, Architecture Framework, Zachman, TOGAF
DATA MODEL QUALITY FRAMEWORK	Vassil Milev , Stefan Kalchev
Abstract: The data quality has a very important role in the business decisions process. For a good quality, a good models and good procedures are needed. The paper presents a framework for assessment of the process of data modelling, based on the maturity model of Harold Kerzner, known as Project Management Maturity Model (PMMM). Based on this framework, a concrete indicators/metrics could be described. They can be used for specifying the maturity level reached by the organization in the field of data modelling. Keywords: PMMM, Data Modeling, Maturity Model, Enterprise Architecture, TQM
EXTENDED INFORMATION MODEL (EIM)	V. Milev, S. Kalchev
Abstract: The Extended Information Model (EIM), presented in this paper is intended for data modelling in development of the Enterprise Architecture. It is the base of data, applications and infrastructure architectures. In EIM the process oriented data model PER is used as a main building element. The PER model appears as a development of principles of semantic data modelling of E/R model of Chen and ET/P model of Codd. The proposed model uses the main principles of SID model, further developed up to using typical data structures in creating aggregated business entities and their integration with respective business processes. Key words: Information Modelling, Data model, SID model, PER model
METHOD FOR DATA MODELING WITH PER MODEL	Vassil Milev, Stefan Kalchev	Proceedings of the International Conference on Information Technologies (InfoTech-2012) 20-21 September 2012, Bulgaria
Abstract: In this paper the method for data modeling in particular problem area with usage of PER model is presented. In it the glossary of terms, brief description of the PER model and guide for implementation was included. Key words: Information Modelling, Data model, SID model, PER model
МЕТОДИКА ЗА РАЗРАБОТКА НА РАЗШИРЕН ИНФОРМАЦИОНЕН МОДЕЛ	Стефан Калчев
Анотация: Значението на подходящ модел на данни и неговото управление е добре известно на IT общността. Тази статия има за цел да представи методика за използването на Разширен Информационен Модел (Extended Information Model, EIM), разработен от автора и включва: Кратко описание на модела. Речник на използваните термини. Дейности по реализацията на модела. Ключови думи: архитектура на предприятия, архитектура на данните, моделиране на данни, , EIM, eTOM, SID, PER model.
ТАКСОНОМИЯ НА ДАННИ ГРАДИВНИ БЛОКОВЕ	Васил Б. Милев
Анотация: Разработката на архитектура на предприятието е процес на моделиране и документиране на всички аспекти на организацията. Разработена е таксономия на данни градивните блокове, която се базира на три основни класификационни признака: абстракция, обхват и зрялост. Тя може да послужи при специфициране и съхранение на информация за данни градивните блокове. Разработката може да се прилага като ръководен материал за ИТ отдели, които започват да реализират проекти в областта на синхронизацията на бизнеса и информационните технологии. Ключови думи: архитектура на предприятия, архитектура на данните, моделиране на данни,таксономия, EIM, 3D Model, eTOM.