北京邮电大学软件学院 郭文明 2003.06 《数据库设计与开发》讲义 • Armstrong公理的一些逻辑蕴涵: –合并规则(Union rule):如果X→Y且X→Z,那么X→YZ。 –分解规则(Decomposition rule):如果X→YZ,那么 X→Y且X→Z。
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The Union Rule 合并规则
Union-Rule Configuration 并规则结构
union rule of functional dependencies 函数相依联合规则
union inference rule 并推理规则
rule-union operator 规则并算子
Also determined is a measure of the degree to which all applications are supported by a compromise parameter determined by the union rule.
还确定通过所述联合规则确定的折衷参数支持全部应用程序的程度的量度。
The European Union, Britain and Italy have all said Mr. Gadhafi's rule is coming to an end, and urged the Libyan leader to step down in order to avoid more bloodshed.
欧盟、英国和意大利都表示,利比亚领导人卡扎菲的统治正在走向尽头,它们呼吁为避免更多的流血牺牲,卡扎菲应该下台。
No outside power has ever prevailed by establishing central rule, as Britain learnt in the 19th century and the Soviet Union in the 20th.
这里从未有让任何一个外来势力通过建立中央统治而甘心臣服,19世纪的英国试过,20世纪前苏联也试过。
In remarks to reporters, German Defense Minister Franz Joseph Jung suggested that security would be beefed up with the recent deployment of a European Union Rule of Law Mission in Kosovo,or EULEX, and the expansion of Kosovo's own security force in the coming months.
VOA: standard.2009.06.11
The meeting violated a long-standing rule of Egypt's press syndicate, or union,that forbids any contact between its members and Israelis.
VOA: standard.2009.10.08
The European Union suspended aid because it says the government is committing "grave violations" of the rule of law and democratic values.
VOA: standard.2009.08.14
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