1. A method of creating metadata identifying data accesses by a client, comprising: at each of multiple computing devices: receiving a request to access data from a requesting computing device; recording a record of the request, wherein the record at least identifies the requesting computing device; creating metadata classifying the record, wherein the metadata at least identifies the requesting computing device and stores information describing the request to access data; and storing the metadata in a metabase that contains metadata describing data accessed by each of the multiple computing devices.