关系模型中不确定信息与可能信息的引入与处理
| Data(s) |
1995
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|---|---|
| Resumo |
In this paper,the traditional relational model is extended in order to express indefinite and maybe information. On the basis of the extended relational model.,the foundamental operations in relational algebra are defined again,and the policy and algorithm for updating relational database are given. |
| Identificador | |
| Idioma(s) |
中文 |
| Palavras-Chave | #Incomplete relational database #Indefinite information #Maybe information #Relational algebra #Update |
| Tipo |
期刊论文 |
