XQuery 使用二值(two-valued)逻辑,而不是像 SQL 那样使用三值(three-valued )逻辑。XQuery 的许多操作符是从 XPath 继承而来的,这也使得这些操作符在行为上与 SQL 的操作符有所不同。
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three-valued logic [数] 三值逻辑
three valued 三值的
three valued logic calculus 三值逻辑学
Three-valued probability logic 三值概率逻辑
three-valued flip 三值触发器
three valued model 三值模型
three valued-logic 三值逻辑
three-valued inverter 三值反相器
Three-valued feature vectors based fingerprint matching algorithm is proposed.
提出了基于三值特征向量的指纹匹配算法。
When a relational database system is implemented, three-valued logic is usually adopted to handle incomplete information.
在关系数据库系统的实现中,对不完全信息的处理通常采用三值逻辑。
A new three-valued logic (TVL) threshold gate circuit simple in structure and suitable for IC manufacturing is described. A three-valued t gate IC for multiple purposes is designed.
本文介绍了一种结构简单、适于集成化的三值“阈”门电路,并设计了一个多功能三值T门集成电路。
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