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判断题 Every entity in the entity-set can has different set of attributes
学科：数据库原理与应用(Database Theory and Application)
时间：2023-11-19 06:58:30
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题目1判断题
Every entity in the entity-set can has different set of attributesA. 正确B. 错误
题目2判断题
Relationships can not have attributesA. 正确B. 错误
题目3判断题
The basis for distinguishing between different entities is NAMEA. 正确B. 错误
题目4判断题
the mapping cardinality of entity-sets students and courses is one-to-many mappingA. 正确B. 错误
题目5判断题
Entity refers to something that exists objectively in the real world. Conceptual things cannot be called entitiesA. 正确B. 错误
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