DuckDB is delivered as a managed command-line runtime for Airflow DAGs and other ADO components. It is not a long-running daemon.
ADCM installs /usr/bin/duckdb on selected hosts and manages
/etc/duckdb/conf/duckdb-env.sh and
/etc/duckdb/conf/duckdb-conf.sql. The ADO wrapper applies these
settings whenever the DuckDB CLI starts.