Abstract:
본 발명은 멀티데이터베이스 시스템에서 그룹 통신의 메시징 순서를 이용한 전역 동시성 제어방법에 관한 것으로, 그룹 통신의 메시징 순서 기능을 이용하여 트랜잭션의 동시성을 증가시킬 수 있고 효율적으로 전역 교착상태를 해결할 수 있는 전역 동시성 제어방법이 제시된다. 데이터의 일관성은 동시에 실행되는 트랜잭션의 직렬화 가능성을 보장함으로써 유지되기 때문에 멀티데이터베이스 시스템에서 전역 직렬화 가능성을 유지하기 위해서는 전역 트랜잭션이 실행되는 모든 지역 데이터베이스 시스템에서의 실행 순서가 같은 순서로 직렬화되어야 한다. 그룹 통신에서 제공하는 메시징 순서 기능은 하나의 노드가 여러 개 메시지를 방송하는 경우, 모든 노드는 미리 정해진 순서에 따라 메시지를 수신함을 보장하는 것으로 이는 트랜잭션의 순서를 미리 정하는 것과 같은 역할을 함으로, 전역 트랜잭션의 실행 순서 제어와 전역 교착 상태 해결에 용이하다. 따라서 동시에 실행되는 트랜잭션의 동시성을 증가시키고 효율적으로 전역 교착상태를 해결함으로 써 성능을 향상시킬 수 있다.
Abstract:
PURPOSE: A global concurrency controlling system and method is provided to increase a transaction concurrency and to solve a global deadlock by using a messaging sequence function of a group communication in a multiple database system. CONSTITUTION: The system comprises a global transaction manager module(20), a global transaction agent module(21) and an interface module(22). The global transaction manager module(20) divides a global transaction into sub transactions. The global transaction agent module(21) generates a new global transaction agent, and transmits transaction content. The interface module(22) transmits transaction content to each local database system according to a sequence previously set by a global transaction manager.
Abstract:
PURPOSE: A method for extracting the detail information concerned to the product of an Internet shopping mall is provided to simplify the work process and to reduce the execution time by exactly and promptly extracting the detail product information of the Internet shopping mall using the ontology and regulation. CONSTITUTION: A system manager receives the URL(Uniform Resource Locator) data of the desired Internet shopping mall(S110). The system manager brings HTML documents of the product data from the relevant Internet shopping mall by using a document collection robot(S120) and preprocesses the HTML documents for the ontology and model name search(S130). The preprocessed documents is searched in detail through the ontology and product name of a DB(S140), while the model name search is simultaneously executed for extracting a standard model name(S150).
Abstract:
PURPOSE: A system for constructing an application program based on a repository and a method thereof are provided to reuse an application program, if necessary, based on the repository by developing the application program as component units and to support a cooperative development between developers by sharing developed components through the medium of a repository. CONSTITUTION: An application program editor(21) develops application software. An ERP(Enterprise Resources Planning) server(22) receives a request of a component necessary in the application program editor(21), executes a service logic component, and transmits the component to a business object repository of a DBMS(Database Management System)(23). The business object repository of the DBMS(23) stores information. The application program editor(21) reuses data, a method, a screen, a report, etc., and develops the application software. If a reuse component does not exist, the application program editor(21) develops new component. The ERP server(22) manages a business object repository table, a data model, a screen object, a report object, etc.
Abstract:
본 발명은 스마트카드와 클라이언트간의 보안 유지를 위한 통신 시스템 및 그 방법과 상기 방법을 실현시키기 위한 프로그램을 기록한 컴퓨터로 읽을 수 있는 기록매체에 관한 것으로, 스마트카드와 클라이언트간의 송수신 메시지를 안전하게 보호하여 보안을 유지하기 위한 통신 시스템 및 그 방법과 상기 방법을 실현시키기 위한 프로그램을 기록한 컴퓨터로 읽을 수 있는 기록매체를 제공하기 위하여, 상기 스마트카드의 인증키를 설정하고 인증플래그를 초기화하기 위한 초기화수단; 사용자 및 클라이언트 응용 인증과 세션키 생성을 통하여 상기 스마트카드와 사용자클라이언트간의 안전한 통신 채널을 생성하기 위한 통신 채널 생성수단; 상기 통신 채널 생성수단으로부터 생성된 세션키를 통하여 암호화된 메시지를 송수신하여 상기 스마트카드와 상기 사용자클라이언트간의 안전한 통신을 수행하기 위한 통신수단; 및 상기 통신 수행 후, 세션키 및 인증플래그를 초기화하여 상기 스마트카드와 상기 사용자클라이언트간의 안전한 통신 채널을 해제하기 위한 통신 채널 해제수단을 포함하며, 스마트카드와 클라이언트간의 안전한 통신 시스템 등에 이용됨.
Abstract:
PURPOSE: A credit appraisal system and a method for an Internet shopping mall through the agency for returning goods are provided to appraise the credit of Internet shopping mall based on the result of agency for returning goods in order to make a consumer buy the goods in the Internet shopping mall of excellent credit by previously inquiring the credit of Internet shopping mall. CONSTITUTION: If a consumer(110) registered to the credit appraisal system(130) requests a search for the Internet shopping mall(140), an Internet shopping mall list with respective credit information and customer satisfaction grade stored in a database(170) by a credit appraisal device(160) is displayed to the consumer. The consumer inquires the credit information and customer satisfaction grade and buys the goods at one shopping mall of the listed Internet shopping mall. If the customer requests an agency for returning the goods by connecting to the web site having the credit appraisal system, an agency device for returning goods requests a return to the Internet shopping mall, informs the consumer of the result of return and inputs the result of return to the credit appraisal device. The credit appraisal device stores the automatically updated credit appraisal of Internet shopping mall in the database.
Abstract:
PURPOSE: A method for managing recovery information of encryption key is provided to generate and encrypt hash value for key recovery related data to store it in exterior and test CONSTITUTION: A method for managing recovery information of encryption key includes following steps. Encryption key recovery related data is stored in the encryption key recovery system. Hash value is calculated for the encryption key recovery related data using hash function. The calculated hash value is encrypted to obtain encrypted hash value. The encrypted hash value is stored in exterior storing device for the encryption key recovery system. The encryption key recovery related data include access control information, access log information, environment information, key information and so on.
Abstract:
PURPOSE: The method for distributing the computer program via the on-line is provided to prevent the computer program from duplicating after the on-line distribution, to promote the sale of the computer program via the e-commerce, and to raise the price competition of the computer program good. CONSTITUTION: The method comprises the following steps. The purchaser obtains the PK(Public Key) Authentication of the on-line distribution system from the directory service system of the PKI(Public Key Infrastructure)(S10). The purchaser sends the purchasing information and the purchaser's information(a user's authentication) to the on-line distribution system, and requests the purchase of the desired computer program(S11). The on-line distribution system checks the purchaser's authentication and the purchasing information(S12), and sends the purchase-confirmed message to the purchaser(S13). The purchaser checks the message, pays the bill(S14), and sends the payment information to the on-line distribution system(S15). The on-line distribution system creates the UDP(User Dependant Part), encrypted by the PK of the purchaser, to the computer program(S16). The software package and the receipt are sent to the purchaser(S17). The purchaser installs the computer program to the own computer(S18).