What this sample helps you learn
The following code samples use the open-source [node-oracledb driver](https://node-oracledb.readthedocs.io/en/latest/user_guide/introduction.html) with [Oracle AI Database Free](https://andersswanson.dev/2025/05/22/oracle-database-for-free/).
What this sample demonstrates
TxEventQ
Transactional queues for database-backed events and messaging.
Use when event delivery and data changes need the same transaction boundary.
Testcontainers
Disposable Oracle AI Database Free containers for repeatable local and integration tests.
Use when tests need real database behavior without sharing a long-lived development instance.