Number | Date | Country | Kind |
---|---|---|---|
1-254506 | Sep 1989 | JPX | |
2-198152 | Jul 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4805099 | Huber | Feb 1989 | |
4835735 | Ikegami et al. | May 1989 | |
4851999 | Moriyama | Jul 1989 |
Entry |
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Korth & Silberschatz, Database System Concepts, McGraw-Hill (New York, 1986) pp. 45-105. |