Data logical independence (DLI) is an important characteristic of the database management system (DBMS), DLI could guarantee that application systems are independent of data entities, which is significant for the development of the application system. However the existing DLI solutions are insufficient because the main DLI solution is limited which is based on mapping between
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Product Data Management is a system to manage product-related informationand processes.By tracking product data in the product life cycle to control theproduction process to ensure product quality, to provide optimal management for theenterprise implementation of information technology process. It has an importantmeaning and value, PDM is one of the very popular research direction in the
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With the development of the context-aware system, context-aware middleware has been received widespread attention. The context-aware middleware extract the common technology from the context-aware computing and integrate into the middleware, which can screen the heterogeneity of the different context data, increasing the information reuse. In the system of context-aware middleware, which include many modules, such
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As the development of information technology and computer technology, database system has been extensively applied. Therefore, the database security protection is becoming increasingly important. Access control system is essential for all modules. This paper focus on the access control technology, role-based access control policy model, a new model of competence is applied in the form
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With the rapid development of computer network as a transmitting way of communication and information, concers about the problem of network-security has grown. At present, researchers have advanced many anonymity strategies and realized some prototypes aimed at certain anonymous demands and applications. Typical anonymous systems, using rerouting mechanism, have many analogical functions and similar implementing
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With the rapid development of computer network as a transmitting way of communication and information, concers about the problem of network-security has grown. At present, researchers have advanced many anonymity strategies and realized some prototypes aimed at certain anonymous demands and applications. Typical anonymous systems, using rerouting mechanism, have many analogical functions and similar implementing
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With the rapid development of Internet technology, office automation in enterprise information system is more and more extensive. At present, collaborative office system has been widely used in enterprises and institutions, how fast and efficient to develope flexible, scalable enterprise applications is a difficult issue. Collaborative office system after years of development have accumulated a
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The traditional multimedia courseware had many shortcomings, such as too large files, much complicated courseware-manufacturing and unsuitable for real-time transfer on net. In order to solve them, the author developes the Multimedia Network Teaching System.The system is composed of courseware programing subsystem and application subsystem. The first subsystem is to provide a courseware-programming system of
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With the rapid development of computer network as a transmitting way of communication and information, concers about the problem of network-security has grown. At present, researchers have advanced many anonymity strategies and realized some prototypes aimed at certain anonymous demands and applications. Typical anonymous systems, using rerouting mechanism, have many analogical functions and similar implementing
(Read More…)
With the rapid development of Internet technology, office automation in enterprise information system is more and more extensive. At present, collaborative office system has been widely used in enterprises and institutions, how fast and efficient to develope flexible, scalable enterprise applications is a difficult issue. Collaborative office system after years of development have accumulated a
(Read More…)
