数据库概论(第5版) PPT第3章(1)资料

教育教务系统

职业院校

教学质量分析

SQL/89(FIPS127-1 )第120页1989年SQL/92第622页1992年

SQL99 ) SQL )第1700页1999年SQL 2003第1700页2003年SQL 2008第3777页2006年SQL 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