【优技教育】Oracle 19c OCP 082题库(Q 20题)- 2024年修正版
考试科目:1Z0-082
考试题量:90
通过分数:60%
考试时间:150min
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第20题:
Q 20、
Choose two.
Which two statements are true about Entity Relationships?
A) A table name can be specified just once when selecting data from a table having a self-referencing relationship.
B) A one-to-many relationship in one direction is a one-to one relationship in the other direction.
C) A many-to-many relationship can be implemented only by using foreign keys.
D) A relationship can be mandatory for both entities.
E) A one-to-one relationship is always a self referencing relationship.
Answer:BD
(解析:实体关系是关系型数据库中很重要的概念,一对多的关系在某方面可以看成是一对一,因为他们之间都有一对一的属性; 两张表可以组成关联关系。)
Oracle 19c OCP认证需要到Oracle指定的WDP机构,有了培训记录之后才能考试,考试需要考2科,分别是082(60%及格)和083(57%及格),两科都通过之后才能拿到证书。证书如下:
标签:20,relationship,082,修正版,Oracle,OCP,19c From: https://www.cnblogs.com/cnblogs5359/p/18409866