Study And Implement On The Enterprise Information Integrated System Of China Yangtze Power Co,.Ltd.

As the deepening of the power system reform and the implementation of competition mechanism, the enterprises are improving their core competence through continuous upgrading their management level. It is required that China Yangtze Power Co. Ltd. (hereinafter referring to CYPC) as a listed power company should have first level management level and effective co-operation, especially in the aspects of marketing and capital operation. The enterprise information system is the one of the important method to improve a company's management capability. This article introduces how the enterprise information integration system (EIIS) is setup in CYPC to effectively operate the sub-systems of electronic production management system (ePMS) and other business management system, which realized information sharing and eliminated the isolated information island.The J2EE Three-tiers architecture is the most popularity computing model in recently years. With adding in application server between generic server and client structure, let's traditional Two-tiers architecture transform to Three-tiers architecture, thereby those questions is easily resolved, including business consistency,expansibility and isomerous platforms when you construct an integrated application. Using the ability of span isomerous platforms can integrate all of different applications to this architecture, so we can effective protect the investment of existing information system. Through relationship but correspondingly three tiers, XML data interchange technique, can bring the independent of interface display,business encapsulation,data pick-up. Utilize the tier of lowermost extractive data, you can achieve data interchange function of multiplicate isomerous data source, This will simplify the development of complicated application integrated system, so the integration of isomerous structure system become feasible.By adopting the matured integration technologies, such as J2EE Three-tiers architecture and XML, the ePMS and the Office Automation Systems used in CYPC are integrated into EIIS. The rational and proper adoption of XML technology is the key for the success of EIIS.The following issues are the main studies in this article:(1) Studying the significance of the country's power enterprises reform on the information system construction and analyzing the information systems used...