Chinese
Kingdomnet Digital Archive and Distributed System

Archives play an important role in social information resources.With the rapid development of society,the number of file in the Archive increasing dramatically and increasingly richness of collections,people’s requirement of archives become more and more diversified.People ask for breaking through the boundary of the archive and the limitations of time and space as what they expect themselves to be,so they can seek a combination of similar information. Therefore,adopting modern archives management model,it achieve development goal of digital archives management by information gathering,organizing and development.

    The Principle of System Design

    Design of Kingdomnet Digital Archive and Distributed System follow the principle of reliability, accuracy and high efficiency, distribution and interaction.

    • To integrate seamlessly into the original digitalized resources
    • To describe the issues with digital archives information
    • To describe the issues with digital archives information

      Distribution is a physical characteristic of mass digital archives.And Sharing is a logical requirement of storage system.To solve problem about distributed storage,transmission and access of mass file information,data grids with self-similarity, isomerism ,dynamics and expandability meet the requirement in Security,high-performance,compatibility and economy of distributed file system.Therefore,system choose distributed storage technology based on data grids. Under the environment of network,there are two aspects of design:

      • Distributed file system's storage and management.
      • Design of distributed database system

    • To distributed retrieve efficiently design and implementation of system based on service grids.

      Distributed retrieve is the one of core services in digital Archive.In order to retrieving file information,it should support scientific and rational information storage techniques and retrieve system. Centered on Service Orientation of Distributed System,it uses OGSA through distributed full-text retrieve and distributed metadata retrieve.

    • System security and stability
    • Archives' access security and high-efficiency
    Functions and Features of System
    • Distributed database system architecture on the basis of grids provides an expandable network application system for sharing data resource and preventing information island.
    • Database commit mode based on Two-phase commit of transaction validate most of the resource data in distributed database system for consistency and completeness. Solutions of remote databases based on web service patterns achieve reliability of distributed database accessed.
    • System applied modular design idea based on date and message driven programming method.It support flexible operating system configuration for systems’expansion and maintenance. Using DES & RSA algorithms and encrypting data for vital network information guarantee security and exclusivity of data transmission.
    • Reliable data recovery mechanisms ensure system’s security and recoverability.System assures data’s recovery capability in case of unexpected failures of database servers and disk base. It completes embedding watermark on digital archive information and protecting the original’s authenticity and intellectual property.
    • It completes software driver and operating of digital acquisition equipment .Data acquisition of digital equipments is made up entirely of software.The whole automatic process is from data acquisition, data compression,classification of data,data loader to data display.
    • The system provide digital processing function for irregular file paper-that is not convenient to process by a scanner for making sure that archives resources digitize rapidly without destroying the original files.And cutting edges protect image accuracy against non-relevant image.
    • Digital collection,processing,saving,filing,organizing,publishing with closed-loop management of overall process,provide Chinese GUI and establish friendly men-machine interaction. User can set a variety of parameters during the processing of data collection,such as autorotation,scaling and compress rate of image.
    • It has rich image processing function.The system provides a several image processing operation for the original images,for instance image mirroring,intensity regulation,image Sharpening etc,.
    • It provides search function according to subject headings.
    • It has operation security. The strict permission management system ensure system for using reliably.It is convenient to set permission of operation for system administrator,and record access log automatically.