In a process for managing a plurality of data items contained in a plurality of pages which are sequentially arranged in accordance with predetermined relationships, information on an amount of available space in each of the plurality of pages is stored. When a first data item is inserted into or deleted...http://www.google.com/patents/US7162693?utm_source=gb-gplus-sharePatent US7162693 - Process for managing data in which existing data item is moved to neighbor page before insertion or after deletion of another data item
