Mobile A gent Based Distributed Query System for National Registry Card 1

Mobile agents are autonomous programs that canmigrate i n a heterogeneous network to perform taskson behalf of their owners. Mobile agents also raiseseveral security issues related to the data carried byan agent itself. In mobile agent based application,both code and data can be transferred together fromon e machine to another in the form of class . T hispaper is intended to retrieve data from manydistributed computers in which data is stored inseveral sites that are formed as distributed database .This system will implement as these steps: first, it willi mplement distributed query frame that will processthe user queries and retrieve the necessaryinformation, t hen, it will use the query rule toenhance this system . This paper implements mobileagent that includes master agent and worker agent.In master a gent, the user can retrieve nationalregistry information in which data is stored in masteragent’s database. Worker agents can only distributetheir database to master agent. After distributing,master agent can retrieve national registryinformation in w hich data is not only stored in masteragent’s database but also worker agent’s database