![java - Is it OK to add @Id to an entity which mapped to a table without Primary key column in Spring boot Jpa? - Stack Overflow java - Is it OK to add @Id to an entity which mapped to a table without Primary key column in Spring boot Jpa? - Stack Overflow](https://i.stack.imgur.com/tko2m.png)
java - Is it OK to add @Id to an entity which mapped to a table without Primary key column in Spring boot Jpa? - Stack Overflow
![Tutorial: Build a Spring Boot Application with React and User Authentication - Stormpath User Identity API Tutorial: Build a Spring Boot Application with React and User Authentication - Stormpath User Identity API](http://stormpath.com/wp-content/uploads/2016/12/React-Spring-Google-Chrome.png)
Tutorial: Build a Spring Boot Application with React and User Authentication - Stormpath User Identity API
![JPA and Hibernate Many To Many Extra Columns Bidirectional Mapping with Joined Entity and Single Primary Key in Spring Boot JPA and Hibernate Many To Many Extra Columns Bidirectional Mapping with Joined Entity and Single Primary Key in Spring Boot](https://hellokoding.com/content/images/2020/10/many-to-many-extra-columns.png)
JPA and Hibernate Many To Many Extra Columns Bidirectional Mapping with Joined Entity and Single Primary Key in Spring Boot
![Spring Boot — JPA(上). 這篇文章介紹如何使用JPA 連線到DB。DB 這邊使用Relational… | by Tinghuan Wang | summer's code life | Medium Spring Boot — JPA(上). 這篇文章介紹如何使用JPA 連線到DB。DB 這邊使用Relational… | by Tinghuan Wang | summer's code life | Medium](https://miro.medium.com/max/1400/1*Ty8860xgoWK-VduCrWJRyg.png)