3 docs tagged with "h2"

Step-by-step runnable examples for MySQL vs PostgreSQL vs H2 — UUID primary keys, H2 compatibility mode, profile-based datasource switching, and Testcontainers.

Practical guide to MySQL, PostgreSQL, and H2 for Java developers — architecture differences, UUID handling, H2 for development, and migration paths to production databases.

How LoanApplication is mapped to H2 using JPA @Embeddable value objects, @ElementCollection for rejection reasons, and @PrePersist for UUID generation.