发明名称 |
Database processing method, apparatus for implementing same, and medium containing processing program therefor |
摘要 |
A database processing method for defining and operating data of file reference type which references a file. A column data insert request for specifying position information indicative of a storage location of a file and watch information for watching the file is received from a database client. A request for watching a file indicated by the position information is issued in accordance with the watch information. The position information and the watch information are stored in a database. The foregoing operations permit data in an external file placed outside a database to be treated as data equivalent to ordinary column data stored in the database to improve the integrity of the database.
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申请公布号 |
US6938043(B2) |
申请公布日期 |
2005.08.30 |
申请号 |
US20030725454 |
申请日期 |
2003.12.03 |
申请人 |
HITACHI, LTD. |
发明人 |
NAKANO YUKIO;IWATA MORIHIRO;KOBAYASHI SUSUMU;TSUCHIDA MASASHI |
分类号 |
G06F12/00;G06F17/30;(IPC1-7):G06F17/30 |
主分类号 |
G06F12/00 |
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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