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关系模型中不确定信息与可能信息的引入与处理

By 严丽, 马宗民 and 薛劲松
Topics: Incomplete Relational Database, Indefinite Information, Maybe Information, Relational Algebra, Update, relational algebra
Year: 1995
OAI identifier: oai:ir.sia.cn/:173321/1542
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