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Very Large Global Environment Database System Allowing for Access through High Speed Network

超大型全球环境数据库系统，可通过高速网络访问

基本信息

批准号：
07558048
负责人：
TAKAGI Mikio
金额：
$ 9.6万
依托单位：
University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07558048/
关键词：
database system global environment high speed network retrieval

项目摘要

Recently, the demand for accessing the database system through a high speed network such as FDDI,CDDI or ATM becomes larger. Already we have developed the global environment database system which consists of mass storages and online archivers for large satellite images. Now, it is necessary for our global environment database to provide an efficient access method through a high speed network, especially, ATM network.First, we considered a hierarchical file system which provides a temporal data access and transfer method of movie, and supports an efficient access through ATM network by designing a hierarchical transfer protocol between our file system and ATM drivers. Then, a special driver for ATM network was developed to allow a very large image access to the hierarchical file systems. The experiment of accessing a remote sensing data through ATM network has been done in order to clarify our system. The experimental results showed that our hierarchical file system and special ATM driver are effective for large global environment database system. The graphical user interface and the pattern matching mechanism for satellite image was also constructed on the hierarchical file system to provide high functional interface for remote users through ATM network, since it is also important for a large global environment database to satisfy users' needs such as easy retrieval, quick response from system and good navigation for retrieval.Thus, we proposed a hierarchical file system which can allow efficient accessing through high speed network, which is coming in rapidly, and constructed the experimental system. From the results, we confirmed that our prototype global environment database is an efficient platform for high speed network communication.

近年来，通过高速网络如FDDI、CDDI或ATM访问数据库系统的需求越来越大。我们已经开发了全球环境数据库系统，该系统包括大型卫星图像的海量存储和在线存档。本文首先研究了一种分层文件系统，它提供了一种电影的时态数据访问和传输方法，并通过设计文件系统与ATM驱动程序之间的分层传输协议，支持通过ATM网络的高效访问。在此基础上，开发了ATM网络专用的驱动程序，以实现对分层文件系统的大容量镜像访问。为了进一步说明本系统的功能，我们进行了通过ATM网络访问遥感数据的实验。实验结果表明，我们的分层文件系统和专用的ATM驱动程序是有效的大型全球环境数据库系统。在分层文件系统上还建立了图形用户界面和卫星图像模式匹配机制，通过ATM网络为远程用户提供高功能的接口，因为对于一个大型的全球环境数据库来说，满足用户的需求也是很重要的，如容易检索、系统响应快和检索导航好。我们提出了一种分层文件系统，它可以允许通过高速网络进行有效的访问，这是迅速进入，并构建了实验系统。从结果中，我们证实了我们的原型全球环境数据库是一个高效的平台，高速网络通信。