New Category and Slugs for Enterprise Edition

[brunoborges]

The old days of Java EE and EJBs are gone.

Start a new category called 'enterprise' and add these slugs:

• Servlet versus JAX-RS
• EJB versus CDI
• JDBC versus JPA

[IanDarwin]

https://github.com/IanDarwin/java_evolved_enterprise has jpa->JakartaData examples (compilable but not runnable yet).