• Title/Summary/Keyword: object database

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Mapping IFC to Object-oriented Relational Database (IFC의 객체기반 관계형 데이터베이스로의 매핑)

  • Kim, Seon-Woo;Lee, Ghang
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • 2007.11a
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    • pp.301-305
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    • 2007
  • Mapping of EXPRESS, which is object-favored language to represent IFC model, to Relational Database is not straightforward. Model size can be much bigger and data can be missed through process. However mapping to the object concept added database, such as Object Oriented Database or Object Relational Database, may be simpler and have lots of advantages. This study investigates previous IFC mapping studies, concept of Relational Database and Object Oriented Database, and mapping methodology to Object Relational Database using object.

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A design concept on object database of measurement data for building a safety management network of road bridges (도로 교량의 안전관리 네트워크 구축을 위한 계측자료의 객체 데이터베이스 설계 개념)

  • Park, Sang-Il;An, Hyun-Jung;Kim, Hoy-Jin;Lee, Sang-Ho
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2008.04a
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    • pp.518-523
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    • 2008
  • In this study, we analyzed applicability of object database, designed the concept model based on object-oriented idea for measurement data management, and applied the design model to object database. The concept model composes three sub models Infrastructure managing information model, Infrastructure measurement data model, and Measurement unit model. The process to expand measurement data of new type was executed easily without changing database schema in object database. The process to expand measurement data of new type was executed easily without changing database schema in object database. Therefore, applicability of new technology to infrastructures for building a safety management network of road bridges could be increased with object database system.

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UML Extension for Object-Relational Database Design - Focusing on Oracle11g - (객체-관계형 데이터베이스 설계를 위한 UML 확장 - Oracle11g를 중심으로 -)

  • Joo, Kyung-Soo;Jho, Do-Hyung
    • Journal of Internet Computing and Services
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    • v.12 no.6
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    • pp.149-159
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    • 2011
  • The current applications can be characterized as consisting of complex objects related by complex relationship. Therefore the relational database has been extended to object-relational database because of the complex objects. Accordingly, we need database design methodology for object-relational database. In this pager, we develop an integrated design methodology based on a extended UML class diagram for object-relational database. We make the extend UML class diagram by adding new stereotypes for object-relational database. Also we propose a guideline for transforming the extended UML class diagram to object-relational database schema. We use SQL:1999 as a object-relational data model and Oracle11g as a target object-relational database. We can build more easily and efficiently object-relational database for Oracle11g by using our methodology. Finally we applied our methodology on a computer classroom reservation system for evaluation the methodology.

Object Views in the ODYSSEUS Object-Relational DBMS (오디세우스 객체관계형 DBMS를 위한 오브젝트 뷰)

  • 이재길;한욱신;이민재;이종학;황규영
    • Journal of KIISE:Computing Practices and Letters
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    • v.10 no.1
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    • pp.14-24
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    • 2004
  • Views are essential in providing logical data independence for database systems. Object views in object-oriented/object-relational databases have requirements quite different from those of relational databases due to support for object-oriented concepts. Although many commercial object-oriented/object-relational database systems support object views, implementation techniques have not been discussed sufficiently in the literature. In this paper, we devise a technique for implementing views in object-oriented/object-relational databases and apply it to the ODYSSEUS object-relational database system. We first analyze the requirements of object views. Next, to implement object views, we extend the existing query modification algorithm that has been proposed for implementing views in relational databases. Next, we compare the features of the proposed object view with those of object views in commercial object-relational database systems. It is shown that the proposed object view supports all object-oriented concepts such as object identifiers, inheritance, methods, and composite objects, while existing object views support part of them. Last, we propose detailed techniques for implementing the extended query modification algorithm in the ODYSSEUS object-relational database system.

A New Benchmark for Object-relational DBMSs (객체-관계형 데이터베이스 시스템을 위한 새로운 성능 평가 방법론)

  • Kim, Seong-Jin;Lee, Sang-Ho
    • The Transactions of the Korea Information Processing Society
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    • v.7 no.7
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    • pp.1997-2007
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    • 2000
  • This paper presents a new benchmark for object-relational database systems, which are regarded as the next-generation database system. This benchmark has been developed to evaluate system performance peculiar to object-relational database systems. The design philosophy, test databases, an test queries of the benchmark are presented. This benchmark features scaleability, use of a synthesized database only, and a query-oriented evaluation. We have implemented his benchmark with two commerical object-relational database systems and the experimental results are also reported.

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A Study on Application Object-oriented Database and New Unified Relation Object-oriented Database (객체지향 데이터베이스와 새로운 Unified Relation 객체지향 데이터베이스의 운용에 관한 연구)

  • Park Chang-Min
    • Management & Information Systems Review
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    • v.3
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    • pp.133-150
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    • 1999
  • This paper proposes to study on the interoperation between Relation Database(RDB) and Object-oriented database(OODB). It also describes some Characteristics of OODB and introduces the UniSQL system. This paper suggests a new systemcalled URODB (Unifide Relation & Object-oriented database) that will overcome the limits of OODB, improve the shortcomings of the present RDB, and increase the interchangeability in particular.

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Java Object Modeling Using EER Model and the Implementation of Object Parser (EER 모델을 이용한 Java Object 모델링과 Object 파서의 구현)

  • 김경식;김창화
    • The Journal of Information Technology and Database
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    • v.6 no.1
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    • pp.1-13
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    • 1999
  • The modeling components in the object-oriented paradigm are based on the object, not the structured function or procedure. That is, in the past, when one wanted to solve problems, he would describe the solution procedure. However, the object-oriented paradigm includes the concepts that solve problems through interaction between objects. The object-oriented model is constructed by describing the relationship between object to represent the real world. As in object-oriented model the relationships between objects increase, the control of objects caused by their insertions, deletions, and modifications comes to be very complex and difficult. Because the loss of the referential integrity happens and the object reusability is reduced. For these reasons, the necessity of the control of objects and the visualization of the relationships between them is required. In order that we design a database necessary to implement Object Browser that has functionalities to visualize Java objects and to perform the query processing in Java object modeling, in this paper we show the processes for EER modeling on Java object and its transformation into relational database schema. In addition we implement Java Object Parser that parses Java object and inserts the parsed results into the implemented database.

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An Expert System for Content-based Image Retrieval with Object Database (객체 데이터베이스를 이용한 내용기반 이미지 검색 전문가 시스템)

  • Kim, Young-Min;Kim, Seong-In
    • Journal of Institute of Control, Robotics and Systems
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    • v.14 no.5
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    • pp.473-482
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    • 2008
  • In this paper we propose an expert system for content-based image retrieval with object database. The proposed system finds keyword by using knowledge-base and feature of extracted object, and retrieves image by using keyword based image retrieval method. The system can decrease error of image retrieval and save running time. The system also checks whether similar objects exist or not. If not, user can store information of object in object database. Proposed system is flexible and extensible, enabling experts to incrementally add more knowledge and information. Experimental results show that the proposed system is more effective than existing content-based image retrieval method in running time and precision.

Power System Analysis using OODB (객체지향 데이터베이스를 이용한 전력계통 해석)

  • 박지호;백용식
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.53 no.5
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    • pp.257-265
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    • 2004
  • The complex documentation involved in power system analysis software require a well-defined and friendly database system. We have developed an object-oriented database management system for power system analysis, and have described load flow analysis and transient stability analysis using object-oriented database(OODB). Database management systems are widely used and achieve high reliability of data management in the engineering fields. However relational database system have shortcomings in application to power system analysis. ill relational database, the data model is too simple for modeling complex data and database languages are very different from programming languages. Object-oriented techniques are sufficiently powerful to support data-modeling requirements of GUI applications. The GUI is implemented using C++ on a MS windows platform. The OODB supports data modeling requirements of GUI applications and the performance is well acceptable for Gill applications.

A CALS Integrated Database Design Utilizing CORBA (CORBA 기반의 CALS 통합 데이터베이스 설계)

  • 우훈식;정석찬
    • The Journal of Society for e-Business Studies
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    • v.2 no.2
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    • pp.155-169
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    • 1997
  • The CALS integrated database is a key information technology in which CALS implements an information sharing system to enable digital data transfers for technical and non-technical information in distributed and heterogeneous environments. Such heterogeneously distributed CALS information needs to be systematically incorporated so that it can provide a global data view for CALS users. In this paper, we investigated the technologies of CALS integrated database, and proposed a system prototype to implement an integrated data environment (IDE) utilizing distributed object environments CORBA (Common Object Request Broker Architecture).

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