• 대한안전경영과학회지
• /
• 제9권5호
• /
• pp.97-101
• /
• 2007

As the use of vehicle route application and LBS(location based service) are fast grew, the importance of maintaining road network data is also increased. To maintain road data accuracy, we can collect road data by driving real roads with probe vehicle, or using digital image processing for the extraction of roads from aerial imagery. After compare the new road data to current database, we can update the road database, but that job is mostly time and money consuming or can be inaccurate. In this paper, an updating method of using GPS(global positioning system) enabled cell phone is proposed. By using GPS phone, we can update road database easily and sufficiently accurately.

• 한국측량학회:학술대회논문집
• /
• 한국측량학회 2003년도 추계학술발표회 논문집
• /
• pp.257-262
• /
• 2003

This study is aimed to research the management methodology for the process of GIS database construction. In general, used methodologies are made for the purpose of application program development. And the methodologies reflected GIS characteristics are also applied for GIS software development. But the software methodologies are never introduced to construction of GIS database. In this study, various common methodologies are investigated and analyzed, and the methodology which include the characteristic of GIS database construction process as work steps and detail paths is developed and suggested.

• 한국경영과학회:학술대회논문집
• /
• 한국경영과학회 1995년도 추계학술대회발표논문집; 서울대학교, 서울; 30 Sep. 1995
• /
• pp.46-58
• /
• 1995

Although numerous distributed database design models and solution algorithms have been developed, very few have been validated. Validation is critical to the successful application of such models to distributed database design. In this paper, we develop a simulation system for distributed database design. We then analyze and validate an average response time model using simulation. The simulation results demonstrate that the average response time model is reasonably accurate.

• 한국전산구조공학회:학술대회논문집
• /
• 한국전산구조공학회 2004년도 가을 학술발표회 논문집
• /
• pp.126-132
• /
• 2004

The database design for the management of bridge measurement information is presented in this paper. To express the associated data generated during the whole process of ambient measurement efficiently, requirements analysis for database construction is performed. And to define objects and organize schema conceptual and logical design are performed, which convert data model into logical schema. Finally, physical design is performed using DDL(data defined language). This database is based on the object-relational data modeling approach that has rich expressive power and good reusability in comparison with the traditional entity-relational modeling.

• 한국경영과학회지
• /
• 제20권2호
• /
• pp.139-158
• /
• 1995

A temporal database systems provides timing information and maintains history of data compared to the conventional database system. In this paper, we present a temporal relational database which use an interval-stamping method for instant-based events and for interval-based states. A set of temporal algebraic operators are developed on an instance of time and interval of time so that we can manipulate events and states at a same time. The set of operation is the basis for creating a relational algebra that is closed for temporal relations. And temporal SQL is also suggested as a temporal query relational language for our algebraic operations on temporal relations.

• 경영과학
• /
• 제13권2호
• /
• pp.73-94
• /
• 1996

Knapsack problems represent many business application such as cargo loading, project selection, and capital budgeting. In this research we developed a knapsack problem solver based on Martello-Toth algorithm using a relational database management system on the PC platform. The solver used the menu-driven user interface. The solver can be easily integrated with the database of decision support system because the solver can access the database to retrieve the data for the model and to store the result directly.

• 디지털융복합연구
• /
• 제7권4호
• /
• pp.91-99
• /
• 2009

To determine factors affecting scholarly web database service quality, this research is to investigate factors of web academic information service quality, and analyze how these factors influencing on web academic information service quality satisfactions. As a results, three dimensions were identified namely, information retrieval, ease of use and interaction. The scholarly web database service management has more critical problems than information service in these days. It indicates that the qualitative aspect is becoming more important than quantitative in web academic information service management.

• 산업공학
• /
• 제7권3호
• /
• pp.227-237
• /
• 1994

In this study, graphic environment for system monitoring is designed that can efficiently manage monitoring data. And also system informations are inplemented to database for reliability and a utility management software is developed to monitor systems on graphic environment and RDBMS (Relational DataBase Management System). Specially, system status informations are presented in the forms of animation, graph, value, icon, and voice message. Status data and general basic informations of system can be all the times updated and indexly reported on database.

• 서비스연구
• /
• 제8권2호
• /
• pp.41-65
• /
• 2018

본 연구는 데이터를 기반으로 개인 또는 기업들이 무한한 이익을 창출하는 사회가 되면서 데이터 품질을 중심으로 데이터베이스 운영관리의 중요성이 증가하고 있는데 이를 체계적으로 관리하는 국내 공공, 민간 기업이 많지 않은 상태에 대한 현황 및 문제점을 분석하고 감리인의 입장에서 개선방향을 구명하고자 하였다. 본 연구를 수행하기 위해 개선된 감리 점검항목을 도출하여 이를 기반으로 감리인 및 IT 전문가들을 통해 설문조사를 하였고, 최종 자료를 분석에 활용하여 연구 가설을 실증적으로 검증하였다. 분석 결과, 데이터 품질에 기반을 둔 데이터베이스 운영관리의 개선된 감리 점검항목에 대하여 감리인의 입장에서 모든 점검항목에 대해 매우 만족한다고 나타났다. 또한 비 감리인에 입장에서도 수용범위에 포함된다고 확인되었다. 본 연구를 통해서 정보시스템 운영감리와 기업의 데이터 운영관리의 수행에 이를 활용하여 개선할 수 있을 것이다.

• 지능정보연구
• /
• 제5권1호
• /
• pp.13-34
• /
• 1999

Building a knowledge base effectively has been an important research area in the expert systems field. A variety of approaches have been studied including rules, semantic networks, and frames to represent the knowledge base for expert systems. As the size and complexity of the knowledge base get larger and more complicated, the integration of knowledge based with database technology cecomes more important to process the large amount of data. However, relational database management systems show many limitations in handing the complicated human knowledge due to its simple two dimensional table structure. In this paper, we propose Object-Oriented Knowledge Store (OOKS), a knowledge base model on the basis of a frame sturcture using an object-oriented database. In the proposed model, managing rules for inferencing and facts about objects in one uniform structure, knowledge and data can be tightly coupled and the performance of reasoning can be improved. For building a knowledge base, a knowledge script file representing rules and facts is used and the script file is transferred into a frame structure in database systems. Specifically, designing a frame structure in the database model as it is, it can facilitate management and utilization of knowledge in expert systems. To test the appropriateness of the proposed knowledge base model, a prototype system has been developed using a commercial ODBMS called ObjectStore and C++ programming language.