Today network has grown abundantly due to rapid growth in advancement in technology the people are enjoying the services what it is provided. But at the same time they are losing secrecy of data. Sometimes sensitive data must be handed over to supposedly trust third parties. With the extensive application of database systems, the owners of the databases have urgent requirements to protect their copyright of databases. Some of the data is leaked and found in an unauthorized place the distributor must assess the likelihood that the leaked data came from one or more agents, as opposed to having been independently gathered by other means.