A data indexing system including a plurality of servers and a tracked resource set client is provided. Each of the servers includes a plurality of resources that are part of a resource set. Each of the servers also includes a tracked resource set corresponding to the resource set. The tracked resource set describes the plurality of resources located in the resource set. The server identifies the plurality of resources using rules of linked data. The tracked resource set client is in communication with the plurality of servers. The tracked resource set client has a data index. The data index is built and kept up to date using the tracked resource set of each of the plurality of servers.