### Relevant Articles: 

- [Access the Same In-Memory H2 Database in Multiple Spring Boot Applications](https://www.baeldung.com/spring-boot-access-h2-database-multiple-apps)
- [Spring Boot With H2 Database](https://www.baeldung.com/spring-boot-h2-database)
- [Hibernate @NotNull vs @Column(nullable = false)](https://www.baeldung.com/hibernate-notnull-vs-nullable)
- [Quick Guide to Hibernate enable_lazy_load_no_trans Property](https://www.baeldung.com/hibernate-lazy-loading-workaround)
- [Where Does H2’s Embedded Database Store The Data?](https://www.baeldung.com/h2-embedded-db-data-storage)
- [Spring Boot H2 JdbcSQLSyntaxErrorException expected “identifier”](https://www.baeldung.com/spring-boot-h2-jdbcsqlsyntaxerrorexception-expected-identifier)