Hibernate ORM 5.1 User Guide

Posted 2020-10-11

　　In the broadest sense, Hibernate categorizes types into two groups:

　　　　Value types

　　　　Entity types

2.1.1. Value types

　　Value types are further classified into three sub-categories:

　　Basic type　　　　　　  基本类型

　　　　in mapping the Contact table, all attributes except for name would be basic types. Basic types are discussed in detail in Basic Types

　　Embeddable types　　   对象/包装类型    

　　　　the name attribute is an example of an embeddable type, which is discussed in details in Embeddable Types

　　Collection types　　　　集合类型

　　　　although not featured in the aforementioned example, collection types are also a distinct category among value types. Collection types are further discussed in Collections