... Entity integrity(实体完整性) Entity occurrence(实体出现) Entity-Relationship model(实体关系模型) ...
基于44个网页-相关网页
... Entity integrity(实体完整性):在一个基本表中,主健列的值不能为空。 Entity occurrence(实体出现):实体中的一个唯一可标识的对象。 Entity-Relationship model(实体关系模型):公司的实体、属性和关系的详细逻辑表示。 ...
基于2个网页-相关网页
Entity y occurrence 实体中的一个唯一可标识的对象
This is a count of the number of distinct values and the frequency of the occurrence of duplicates across the data elements of the entity.
这是实体的数据元素之间不同值的数量和重复出现次数的计数。
Article 3 an accident entity as mentioned in these Rules shall refer to a production or business operation entity that is liable for the occurrence of an accident.
第三条本规定所称事故发生单位是指对事故发生负有责任的生产经营单位。
The demand is a primitive impetus of creative occurrence, while the realization of these creations is also affected by such factors as creation entity, economic conditions and cultural background.
需求是创造发生的原动力,由于需求而涌现出的大量的关于计算机技术产品的创造设想的社会实现又受到创造主体、经济因素和文化背景的影响。
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