• Journal of Digital Contents Society
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• v.6 no.2
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• pp.107-112
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• 2005

We need a research for representing and processing of multimedia data in database because of increasing the importance and utilization of the data owing to development of internet technology. RDBMS supports only the storing-structure to store multimedia, but the support for data type, representation and query of multimedia is insufficient. To cope with this problem, ISO/IEC standardized SQL multimedia(SQL/MM) for multimedia data. However, ORDBMS supports SQL/MM, but RDBMS does not support it. Therfore, this theis proposes a query interpreter to support SQL/MM in MS-SQL 2000 as one of RDBMS and introduces a image retrieval application using it. The quary interpreter supports the function to convert SQL/MM into SQL, and additionally the function of the image duplication check. The image processing application using a query interpreter can easily be integrated and operated with traditional RDBMS-based system.

• Journal of the Korea Society of Computer and Information
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• v.15 no.9
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• pp.9-18
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• 2010

Standards for various multimedia and application fields have been developed, and the standardization for the multimedia and applications have been making as ISO/IEC 13249 packages by ISO/IEC JTC 1/SC 32/WG 4. This paper describes SQL/MM part 8, which is currently being standardized for providing consistent access support to metadata registries. Systems for ISO/IEC 11179 - metadata registries, the international standard, have been realized and utilized in various fields. However, there is no standardized query processing to share and exchange information between the systems, and thus it causes many problems. Therefore, SQL/MM part 8 described in this paper resolves these problems as well as makes users easily understand it.

• Electronics and Telecommunications Trends
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• v.9 no.4
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• pp.157-169
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• 1994

본 고에서는 ISO/IEC JTC1/SC21 WG3(Database)에서 표준화하고 있는 SQL Multimedia and Application Packages (SQL/MM)에 대해 표준화의 동향과 이 표준에서 정의하고 있는 기술적인 내용을 분석한다. SQL/MM은 데이터베이스 언어의 표준인 SQL을 확장한 새로운 표준으로서, 멀티미디어 응용에서 필요로 하는 여러 가지 요구 사항을 만족시킬 수 있도록 하기 위한 새로운 기능들이 추가된 형태이다. 이 표준은 SQL3라는 객체 지향 데이터베이스를 위한 표준 질의 언어의 기본 기능 위에 멀티미디어적 요소들을 첨가하는 방법으로 표준 제정이 진행되고 있다. 우선적으로 다루고 있는 분야는 문서에 대한 full-text 검색 분야와 공간 및 시간 관계를 이용한 검색 분야 등이며, 다양한 데이터 타입들 중에서 여러 종류의 응용에서 공통적으로 사용되는 범용의 것들을 체계적으로 정리하는 분야도 병행하고 있다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.27 no.1C
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• pp.21-35
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• 2002

Nowadays, in accordance with increasing expectations of multimedia stream service on the internet, a lot of distributed applications are being required and developed. But the models of the existing systems have the problems that cannot support the extensibility and the reusability, when the QoS relating functions are being developed as an integrated modules which are suited on the centralized controlled specific-purpose application services. To cope with these problems, it is suggested in this paper to a distributed QoS management system on CORBA, an object-oriented middleware compliance. This systems we suggested can provides not only for efficient control of resources, various service QoS, and QoS control functions as the existing functions, but also QoS control real-time negotiation and dynamic adaptation in addition. This system consists of QoS Control Management Module(QoS CMM) in client side and QoS Management Module(QoS MM) in server side, respectively. These distributed modules are interfacing with each other via CORBA on different systems for distributed QoS management while serving distributed streaming applications. In phase of design of our system, we use UML(Unified Modeling Language) for designing each component in modules, their method calls and various detailed functions for controlling QoS of stream services. For implementation of our system, we used OrbixWeb 3.1c following CORBA specification on Solaris 2.5/2.7, Java language, Java Media Framework API 2.0 beta2, Mini-SQL 1.0.16 and the multimedia equipments, such as SunVideoPlus/Sun Video capture board and Sun Camera. Finally, we showed a numerical data controlled by real-time negotiation and adaptation procedures based on QoS map information to GUIs on client and server dynamically, while our distributed QoS management system is executing a given streaming service.