A computing system provides continuous availability of data files that are maintained at a file management system and linked to a database management system (DBMS) through a Datalink data type, even while any particular file is being changed with DBMS append or update operations. When a file is linked,...http://www.google.de/patents/US6088694?utm_source=gb-gplus-sharePatent US6088694 - Continuous availability and efficient backup for externally referenced objects
Continuous availability and efficient backup for externally referenced objects
