Systems and methods for storing and accessing data. A relation store may be used to store algebraic relations between data sets. Alternative collections of algebraic relations may be generated and evaluated to determine an optimized collection of algebraic relations to use in calculating and providing...http://www.google.de/patents/US20070276785?utm_source=gb-gplus-sharePatent US20070276785 - Systems and Methods for Data Storage and Retrieval Using Algebraic Optimization