Research of Information Resources Integration and Shared in Digital Basin

The digital basin is a complicated heterogeneous distributed system. There are a lot of information resources in it, include data resources, technology resources, system resources, application resources, etc. It is a primary problem needed solve and purpose in the digital basin how integrates this resources, turns it into an organic whole, provides maximum shared. Constructing information resources integration framework using OGSA not only can solve the integrating problem of heterogeneous distributed information resources but also can ensure simple high efficiency shared of all kinds of information resources. The application system development based on OGSA is high efficiency also. 1 The definition and meaning of the digital basin The concept of Digital Basin explicates from Digital Earth. It is an information aggregation about the basin on Digital Earth. Further on, the Digital Basin is an organic whole that digitize all the information of the basin and its interrelated, and structure by using form of the spatial information. Thereby it effectively reflects the integrated and true situation of the whole basin from each side, and fills various needs of transferring information. The Digital Basin is a system platform inosculating all kinds of digital information within basin based on basin spatial information, it is a uniform and digitized reappearances of true basin and the phenomenon related it. The Digital Basin consists of database included various information and sub-system of data gathering, processing, exchanging and managing, can make comparison and analysis of data of different period based on different needs, and penetrates its variational rule. The primary purpose of the Digital Basin is to solve existent problems now for instance difficulty of data share, lack of efficiency of software programming, lack of degree of software standardization, difficulty of ensuring software quality and difficulty of system integration. * This work was supported by the 863 and 973 of China under the grant No.2001AA113170 and No.2002CB312002, and the science & technology innovation foundation of Hohai university under the grant No 2002407243 2 The needed solve important problem in the digital basin The needed solve important problem is integration and shared of all kind of information resources in the digital basin. The information resources in the digital basin include data resources, technology resources, system resources, application resources, etc. A mass of information resources distribute in different position, they are different with each other. All of them will be used many users, and these users have different purpose and distribute in different position. The solving of problem integrating and sharing these information resources is very difficult. So it is a key problem of the digital basin. 3 The method of information resources integration and shared in the digital basin Now there are many technologies to integrate and share the information resources. In these technologies, the OGSA is the most new and effective method. It can entirely satisfy need of the digital basin and better solve problems of multi-sources, heterogeneous, sharing, individuation, etc using OGSA.