Hibernate 面试题与答案
Question: What is ORM?Answer: ORM stands for Object/Relational mapping. It is the programmed and mapping of objects in a Java application in to the tables of a relational database using the metadata that describes the mapping between the objects and the database. It works by transforming the data from one representation to another.We are familiar with Model/Pojo class and Relational Database. Here Object means Model/Pojo class and Relational means the databases. By hbm.xml file or through annotations we represent the mapping between Object and Relational databases. |
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