A system and method provide multi-threaded database access simultaneous to a plurality of users. One or more searchable indices are created. The searchable indices each have a B*tree having a plurality of nodes arranged hierarchically from a root node. The system and method maintain a known position...http://www.google.com.tw/patents/US6480839?utm_source=gb-gplus-share專利 US6480839 - System and method for improving database data manipulation using direct indexing within a B*tree index having a tunable index organization
