发明名称 |
Device accessing a database using one of old definition information and new definition information based on an access request |
摘要 |
A derived database processing system in a database processing device comprises a plurality of independent databases which can provide a plurality of users with a group of data to be shared for a common purpose. The derived database processing system comprises a dictionary for managing database logical definition information and database storage information in a secondary memory, a derived database registering unit for determining a definition frame of a new name without violating a definition frame of a name used in a schema definition which defines data in a database, a dictionary information manipulating means for referring to said dictionary when the manipulation target is a derived database, then selecting necessary components of said database, and a database processing procedure generating unit, in a binding process to optimize access routing in a database. The derived database processing means also comprises a database definition management means which replaces an old version of a database definition information with a new version by utilizing a consistency monitoring means and an integrity monitoring means associated with it.
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申请公布号 |
US5881378(A) |
申请公布日期 |
1999.03.09 |
申请号 |
US19950425611 |
申请日期 |
1995.04.20 |
申请人 |
FUJITSU LIMITED |
发明人 |
HAYASHI, KATSUMI;SAITOU, KAZUHIKO;OHSATO, HIROSHI;MITANI, MASAAKI;HAYASHI, TOMOHIRO;OBATA, TAKASHI;SEKINE, YUTAKA;URA, MITSUHIRO;ISHII, TAKUJI |
分类号 |
G06F17/30;(IPC1-7):G06F17/00 |
主分类号 |
G06F17/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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