A method for identifying a time at which first data was written to a data store. A data store is configured to respond to data requests made to the data store with the data in the data store at a first time in the past. The method can be used to identify a time, for example, at which a data store was...http://www.google.com/patents/US7725667?utm_source=gb-gplus-sharePatent US7725667 - Method for identifying the time at which data was written to a data store
Method for identifying the time at which data was written to a data store