The world of databases is extremely diverse and complex. Besides the challenges of working with different relational database systems, the NoSQL world may add to these challenges. One goal of the persistence frameworks is to ensure portability of the code, so we’ll now look at the Hibernate OGM alternative and how it tries to support the JPA solution working with NoSQL databases.
A NoSQL database is a database that keeps data in a format different than relational tables. In general, NoSQL databases provide the advantage of flexible schemas, meaning that the designer of the database does not have to determine the schema before persisting data. In applications that quickly change their requirements, this may be an important advantage for development speed.