Due to complicacy of DTD, it is difficult to study the logical implication of XFD.
由于DTD的复杂性,使得XFD的逻辑蕴涵问题研究比较困难。
Coding DTD can test the logical implication problem of XML function dependency in linear time.
编码后的DTD能在线性时间内对XML函数依赖的逻辑蕴涵问题进行判定。
Material and logical implication coincide in the classical logic, however they do not coincide in every logics.
实质蕴涵与逻辑蕴涵在经典命题逻辑中是一致的,但是二者并不是在任何逻辑中都一致。
An analysis and discussion is also made on the conceptual proposition, deductive construction and logical implication.
分析讨论了元极学的概念命题演绎结构与逻辑特征.