Summary information for documents are stored as entries in a table in a relational database. Each entry includes a unique identifier, value(s) for a set of attributes and rendering information for the corresponding document. A collation order is obtained that defines a sort order for the documents based...http://www.google.de/patents/US7685136?utm_source=gb-gplus-sharePatent US7685136 - Method, system and program product for managing document summary information
