first of all:you can see the very simple module which you need to use at the beginning.It’s a class module
a simple team class box
The composition of one class
class name on the top of the box
attributes include all fields of the objects
some operations
And if you want to entry foundamental level ,I think these relationships you need to know clearly.
generalization:also can be called inheritance
association:include three relationships
They are dependency, aggregation,and composition.
the relationship of the generalization
references:
1.https://wenku.baidu.com/view/…
2.https://blog.csdn.net/luansha…
3.https://blog.csdn.net/xiehuim…
By the way, this is my bilibili URL:
作者：少年免礼
https://www.bilibili.com/read…
出处：bilibili