Imperfect Information in Relational Databases
Imperfect Information in Relational Databases
复制标题
关系数据库中的不完美信息
DOI:
10.1007/978-1-4615-6245-0_3
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发表时间:
1996
期刊:
影响因子:
--
通讯作者:
A. Pirotte
中科院分区:
文献类型:
--
作者:
E. Zimányi;A. Pirotte
Databases model the real world at two levels: the database schema specifies the structure of the database, and the database extension represents a set of facts or events of the real world. TheAppropriate Scheme Assumption[10] expresses that this two-level description is a valid view of the world. Such a distinction between schema and extension is often blurred in artificial intelligence.