Distributed Heterogeneous Data Fusion Technology And Its Application In Tourism

With the quick growth of application requirement in database, general techniques can't handle some problems such as how to manage information that is stored in different databases and different places. For example, the head office not only wants to deal with local information but also wants to control information of subsidiary companies, because the head office may want to have general view of information or sometimes there would be cooperation between subsidiary companies and head office in management. So distributed database system comes into being and it becomes one of the most flourishing research fields in computer science. The integrity of information which means provides an uniquely view of distributed database to users and let them use the distributed and heterogeneous information just like the data is stored in local and in the same schema is very important.In this paper we have reached some technique of distributed database like store technique, conjunction control, and security as well as technique of heterogeneous data integrity. Then we proposed an information accessing model of distributed and heterogeneous data which pay most attention on information storing, exchanging and security.1) In storing model, we discuss how partition, place and conjunction distributed and heterogeneous information.2) In exchanging model, we discuss integrity technology of distributed and heterogeneous information associate with data standardization, searching optimization and transaction processing.3) In security model, we discuss LDAP-based user access control and Security-Component-Based data security.This technique is valuable to tourism information sharing, and tourism companies could become stronger as it could get tourism information in time. Then we proposed a tourism information storing model, an EJB component based tourism information exchange model as well as a dynamic tourism information control model.Finally, we finished a Web-based standardized tourism information share platform which helps integrate and interconnect tourism information. And every tourism information system gets data from this platform and manages information using public interface.