PK/FK
Terms
Cardinality
Attributes
Info About Kaide
100
以下哪一个可能被用作学生入学表和学生成绩表之间的外键？
Student_name
100
What are the types of entities you can have? 您可以拥有哪些类型的实体？
Strong and Weak
100
Student is an example of which component in the ER diagram?
以下是 ER 图中哪个组件的示例？
Entity
100
RollNo is an example of what attribute? RollNo 是哪个属性的一个例子？
Key Attribute
100
DAILY DOUBLE!
How many components of an ER Diagram are there? What are they? ER 图有多少个组件？它们是什么？
200
What is the main way to absolutely recognize a record within a database?
绝对识别数据库中记录的主要方法是什么？
Primary Key (PK)
200
What was created in 1970?
1970 年创造了什么？
The Relational Database Model
200
What notation are these? 这是啥符号？
Zero, Many, One
200
Age is what type of attribute in the following diagram?
在下图中，年龄属于哪种类型的属性？
Derived Attribute
200
What is his wife's family name? 他的妻子姓什么？
Tian 田
300
使用外键时经常发生的表之间的关系名称是什么？
Parent-child
300
What relies on its relationship with a strong entity for its existence and identification? 什么依赖于它与强实体的关系来存在和识别？
Weak Entity
300
Name this notation. 命名此符号。
One and Only One
300
Phone_no is an example of what type of attribute?
Phone_no 是哪种类型属性的一个示例？
Multivalued Attribute
300
What country was I born in? 我出生在哪个国家？
Germany
400
What directly identifies another table in a database?
什么可以直接标识数据库中的另一个表？
Foreign Key (FK)
400
What is the notation that we use for relationships between entities called?
我们用来表示实体之间关系的符号是什么？
Crow Foot Notation
400
What notation is this? 这是啥符号？
one or many
400
This is an example of what attribute? 这是什么属性的一个例子？
Composite Attribute
400
How old am I? 我几岁了？
30
500
DAILY DOUBLE:
What can always be true about Primary Keys (PK) and not always about Foreign Keys (FK)?
关于主键（PK）什么总是正确的，而关于外键（FK）什么却不总是正确的？
500
What is the number of relationships or instances one entity has with another called? 一个实体与另一个实体之间有多少个关系或实例？
Cardinality
500
What is the crow foot notation you should use between the following if each course is taught by one professor, but a professor can teach many courses.
如果每门课程由一位教授讲授，但一位教授可以讲授多门课程，则您应该在下列内容之间使用什么乌鸦脚符号。
Course to Professor : One and Only One
Professor to Course: One or Many
500
What exhibits the properties of an entity? 什么展现出实体的属性？
Attribute
500
What is my favorite sport in winter time? 冬季我最喜欢的运动是什么？
Snowboarding 单板滑雪