scholarly journals Building Subject Domain Ontology on the Base of a Logical Data Mod

2020 ◽  
Vol 23 (3) ◽  
pp. 390-417
Author(s):  
Alexander M. Gusenkov ◽  
Naille R. Bukharaev ◽  
Evgeny V. Biryaltsev
Keyword(s):  
Data Model ◽  
Relational Databases ◽  
Object Oriented ◽  
Domain Ontology ◽  
Subject Domain ◽  
Description Language ◽  
The Subject ◽  
Owl Ontology ◽  
Oil Company ◽  
Logical Data

The technology of automated construction of the subject domain ontology, based on information extracted from the comments of the TATNEFT oil company relational databases, is considered. The technology is based on building a converter (compiler) translating the logical data model of Epicenter Petrotechnical Open Software Corporation (POSC), presented in the form of ER diagrams and a set of the EXPRESS object-oriented language descriptions, into the OWL ontology description language, recommended by the W3C consortium. The basic syntactic and semantic aspects of the transformation are described.

scholarly journals FORMALIZED REPRESENTATION FOR THE DATA MODEL WITH THE UNIVERSAL BASIS OF RELATIONS

2019 ◽  
pp. 453-460
Author(s):  
Vitalii I. Yesin ◽  
Mikolaj Karpinski ◽  
Maryna V. Yesina ◽  
Vladyslav V. Vilihura
Keyword(s):  
Relational Database ◽  
Data Model ◽  
Relational Databases ◽  
Subject Domain ◽  
Dynamic Changes ◽  
Standard Data ◽  
The Subject ◽  
Logical Design ◽  
The Creation ◽  
Universal Standard

The goal of the article is to develop a universal (standard) data model that allows you to get rid of the need for a costly policy of doing extra work when developing new ones or transforming existing relational databases (RDBs) caused by dynamic changes in the subject domain (SD). The requirements for the developed data model were formulated. In accordance with the formulated requirements, the data model was synthesized. To simplify the process of creating relational database schemas an algorithm for transforming the description of the subject domain into the relations of the universal basis of the developed model was proposed. The scientific novelty of the obtained results is: a data model that, unlike known ones, allows us to simplify the creation of RDB schemas at the stage of logical design of relational databases, under the conditions of dynamic changes in subject domains, due to the introduced universal basis of relations, as a means of describing structures and the presentation of data for various SDs has been developed.

scholarly journals Development of dynamic three-dimensional coastal information system: a case study in Hong Kong

2012 ◽  
Vol 14 (3) ◽  
pp. 815-828 ◽  
Author(s):  
Bi Yu Chen ◽  
Jianzhong Lu ◽  
Onyx W. H. Wai ◽  
Xiaoling Chen
Keyword(s):  
Hong Kong ◽  
Data Model ◽  
Three Dimensional ◽  
Object Oriented ◽  
Information Management System ◽  
Data Types ◽  
Related Data ◽  
Abstract Data ◽  
Logical Data

Coastal-related data are four-dimensional in nature, varying not only in location and water depth but also in time. The heterogeneous and dynamic nature of coastal-related data makes modeling and visualization of these data a challenging task. A new object-oriented spatiotemporal data model to represent dynamic three-dimensional coastal data is proposed in this study. In the proposed model, a set of abstract data types allowing suitable spatiotemporal operations is defined to manipulate complex coastal data. In addition, a logical data model is proposed for the design of a spatiotemporal database. The proposed object-oriented and logical data models are implemented in a real-world coastal information management system in Hong Kong. An elegant visualization framework for displaying the coastal data, based on the concept of a time–depth bar, is presented in the case study.

CREATING SQL-QUERIES IN RELATIONAL DATABASES

2020 ◽  
pp. 8-19
Author(s):  
Sapiahon Khaidarova ◽  
Keyword(s):  
Relational Database ◽  
Data Model ◽  
Relational Databases ◽  
Query Language ◽  
Information Model ◽  
Subject Area ◽  
Conceptual Level ◽  
Microsoft Access ◽  
Pedagogical Institute ◽  
The Subject

The article outlines the methods for creating SQL queries in relational databases. The use of the structured query language SQL in relational databases is substantiated. It provides information about the SQL standard and the three-tier database organization system. The author describes the choice of a data model based on the conceptual level using to that end an example of the Kokand Pedagogical Institute as the relational database model. A relational conceptual diagram of the information model of a pedagogical institute is compiled. Such a conceptual diagram is depicted using a cluster. Objects of the subject area are depicted in the form of tables, which differ from each other in geometric shapes or colors. The relationships between tables in Microsoft Access are presented. The basic rules for creating and filling tables in SQL using the instructions CREATE TABLE and INSERT INTO are considered. The syntax of the SELECT statement is given. All offers of the SELECT statement and their order are listed. Examples are given for compiling simple queries and subqueries in SQL using the SELECT statement for the database of the Kokand Pedagogical Institute. Information about the order of execution of internal and external requests is given. The article considers the ORDER BY offer of a SELECT statement for sorting query results.

scholarly journals Overview of Object-Oriented Paradigm in an Appendix to the Development of Databases

2019 ◽  
Vol 17 (3) ◽  
pp. 123-134
Author(s):  
E. A. Yatsenko
Keyword(s):  
Data Model ◽  
Computer Aided Design ◽  
Relational Databases ◽  
Object Oriented ◽  
Database Design ◽  
Practical Implementation ◽  
Software Products ◽  
Knowledge Based ◽  
Computer Aided ◽  
Production Knowledge

The article provides an overview of projects, technologies, software products developed to implement the ideas of an object-oriented approach to database design. In the 80s of the 20th century, there were many projects devoted to the idea of OODB, many experts expected that in the near future relational databases would be crowded out with objectoriented ones. Despite the impressive number of projects conducted by both teams of scientists and commercial companies focused on practical implementation, there was no clear formulation of an object-oriented data model, each team presented its own vision of applying object-oriented concepts to database design. The absence of a universal data model, with a well-developed mathematical apparatus (as in the case of relational databases), is still the main problem in the distribution of an OODBMS. However, the use of relational DBMS raises a lot of problems that are most acutely felt in areas such as computer-aided design, computer-aided production, knowledge-based systems, and others. OODB allow to combine the program code and data, to avoid differences between the representations of information in the database and the application program, as a result of which modern developers show interest in them. There are a lot of OODBMS, but they cannot compete with the largest storage organization systems.

scholarly journals Experimental study on the effectiveness of a teaching approach using barker or Bachman notation for conceptual database design

2018 ◽  
Vol 15 (2) ◽  
pp. 421-448 ◽  
Author(s):  
Aida Kamisalic ◽  
Marjan Hericko ◽  
Tatjana Welzer ◽  
Muhamed Turkanovic
Keyword(s):  
Experimental Study ◽  
Conceptual Design ◽  
Learning Process ◽  
Data Model ◽  
Relational Databases ◽  
Education Institution ◽  
Database Design ◽  
Teaching Approach ◽  
Logical Design ◽  
Logical Data

Relational databases are one of the pillars of information systems and as a consequence conceptual and logical design can be seen as the foundation of almost every application regardless of the platform. Nevertheless, little research has been done so far on the effectiveness of teaching approaches to database basic concepts and design. This paper introduces a multi-level experimental study developed to examine the effectiveness of learning database fundamentals, depending on the notation used for conceptual design. The main experiment was carried out at a higher education institution. We developed different experimental instruments to evaluate the effectiveness of a teaching approach using Barker or Bachman notation for conceptual database design. In contrast to Barker notation, Bachman notation incorporates elements of logical design (i.e. foreign keys) in the conceptual design level. Students? achievements were examined with regard to influencing factors throughout the learning process. Introducing the Bachman notation and a manual transformation from a conceptual into a logical data model, could increase students? understanding of conceptual, logical and relational data model concepts. We found that the notation used during the learning process has an impact on students? achievements. Moreover, students achieved better results when solving tasks presented with a notation that incorporates elements of logical design into the conceptual level. Finally, we required the use of manual transformation from a conceptual into a logical data model and the results confirmed an increase in students? understanding.

Use of ontological analysis for competence evaluation of scientists in a particular subject domain

2016 ◽  
pp. 081-096
Author(s):  
J.V. Rogushina ◽  
Keyword(s):  
Scientific Activity ◽  
Subject Domain ◽  
Semantic Matching ◽  
Research Project ◽  
Open Environment ◽  
Competence Evaluation ◽  
The Subject ◽  
Ontological Analysis ◽  
Use Of Knowledge ◽  
The Web

Objective methods for competence evaluating of scientists in the subject domain pertinent to the specific scientific product – research project, publication, etc. are proposed. These methods are based on the semantic matching of the description of scientific product and documents that confirm the competence of its authors or experts in the domain of this product. In addition, the use of knowledge acquired from the Web open environment – Wiki-resources, scientometric databases, organization official website, domain ontologies is proposed. Specialized ontology of scientific activity which allows to standardize the terminological base for describing the qualifications of researchers is developed.

scholarly journals Building an ‘Industrial Engineering Mindset’ among Indian Healthcare Executives: Toward Management of Healthcare Facilities at an Industrial Scale post the COVID-19 Pandemic

2021 ◽  
pp. 2516600X2110059
Author(s):  
Som Sekhar Bhattacharyya ◽  
Rajesh Chandwani
Keyword(s):  
Literature Review ◽  
Industrial Engineering ◽  
Industrial Scale ◽  
Subject Domain ◽  
Healthcare Facilities ◽  
Healthcare Executives ◽  
The Future ◽  
Adequate Quantity ◽  
The Subject

The COVID-19 pandemic highlighted the necessity of good quality and adequate quantity of healthcare infrastructure facilities. Healthcare facilities were provided for COVID-19 facilities with improvisation and supplementary lateral infrastructure from other sectors. However, the main point of contemplation going into the future was regarding how to quickly develop healthcare facilities. The subject domain of ‘industrial engineering’ (IE) and its associated perspectives could provide some key insights regarding this. The authors undertook a conceptual literature review and provided theoretical argumentation toward this. The findings provided insights regarding the application of industrial engineering concepts in healthcare facilities and services.

ODM: An object oriented data model

1989 ◽  
Vol 7 (1) ◽  
pp. 3-35
Author(s):  
Mojtaba Mozaffari ◽  
Yuzuru Tanaka
Keyword(s):  
Data Model ◽  
Object Oriented

Study of the Spatio-Temporal Data Model in Sea Battlefield

2012 ◽  
Vol 246-247 ◽  
pp. 744-748
Author(s):  
Yue Lin Sun ◽  
Lei Bao ◽  
Yi Hang Peng
Keyword(s):  
Data Model ◽  
Object Oriented ◽  
Space Time ◽  
Comprehensive Analysis ◽  
Temporal Data ◽  
Data Types ◽  
Spatio Temporal ◽  
The Right ◽  
Effective Analysis

An effective analysis of the battlefield situation and spatio-temporal data model in a sea battlefield has great significance for the commander to perceive the battlefield situation and to make the right decisions. Based on the existing spatio-temporal data model, the present paper gives a comprehensive analysis of the characteristics of sea battlefield data, and chooses the object-oriented spatio-temporal data model to modify it; at the same time this paper introduces sea battlefield space-time algebra system to define various data types formally, which lays the foundation for the establishment of the sea battlefield spatio-temporal data model.

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