Methods and apparatuses are described that use index data-spaces that point to other data-spaces referred to as data data-spaces to efficiently associate temporary information with data-elements in a data-space. An original data-space is divided into data-elements of fixed size, based upon application...http://www.google.de/patents/US7146373?utm_source=gb-gplus-sharePatent US7146373 - Data-space tracking with index data-spaces and data data-spaces
