Research Of Information Query System Based On J2EE Distributed Computing Model

In current information society,information shows it'S inherecharacteristics that play very important function.With high speedimprovement of information,software systems,especially for theinformation system,is becoming more complex。This thesis is been comeup in this situation.The task of this thesis is to research on information querytechnology and application of software framework,Middleware,J2EEarchitecture and to implement a web query system of un—related OS anddistributed platform.The information query technology involves with keyword query and natural language query.In the web query system,theadministrator can add new database needed to be queried and define thequery key dynamically.And then,ordinary user of this query system cansearch the information according to the keys.During the process of this query system,the method of softwareengineering has been applied,for examples,the documents of systemanalysis and system design . And the UML and DBCASEtool-PowerDesigner-improved the efficiency of system design.