In continuation to MongoDB setup and how to work with Spring Boot in MongoDB, now in this article we will learn the most important DB operations. If we are in Software development world, we should at least know 'How to write CRUD operation on the database front'. Needless to say, how much importance these operations have. If you are developing any web application in any programming language, you can't escape from these operations. CRUD is nothing but an abbreviation to Create, Read, Update and Delete. Moreover, development of CRUD operations is expected from all developers. We will learn 'Spring Boot MongoDB CRUD Example' in this article. In order to implement CRUD Operations in Spring Boot with MongoDB, we will make use