Modern Java persistence framework for Event-driven systems. Built-in outbox pattern. Atomic transactions with domain events. Spring, Quarkus, Micronaut, or pure Java

Demonstrates JDX ORM object streaming — retrieving large query results in incremental batches using QFLAG_STREAM, queryFetch, and queryClose rather than loading everything into memory at once. Must be run inside a transaction; shows both a full-table stream and a filtered, ordered stream.