US 7,421,447 B2 Sep.2, 2008
(54) METHOD, SYSTEM AND PROGRAM FOR CONSTRUCTING A DATABASE
(75) Inventors: Yoshitaka Tokusho, Tokyo (JP); Yukio Nakano, Oyama (JP)
(73) Assignee: Hitachi, Ltd., Tokyo (JP)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 400 days.
(21) Appl.No.: 11/008,246
(22) Filed: Dec. 10, 2004
(65) Prior Publication Data
US 2006/0095462 Al May 4, 2006
(30) Foreign Application Priority Data
Oct. 28,2004 (JP) 2004-313978
(51) Int. CI.
G06F17/00 (2006.01)
(52) U.S. CI 707/102
(58) Field of Classification Search 707/1 10,
707/100-104.1,200-205, 102 See application file for complete search history.
(56) References Cited
U.S. PATENT DOCUMENTS
5,758,345 A 5/1998 Wans
