SQLite is the local baseline for all ORM behavior tests.
PostgreSQL, MySQL, and MariaDB have gated Rust integration tests that run when ORMDANTIC_POSTGRES_URL, ORMDANTIC_MYSQL_URL, or ORMDANTIC_MARIADB_URL are set.
SQL Server and Oracle URLs are parsed and their SQL dialects are represented. Their native runtimes are available behind optional Cargo features because they add larger enterprise-driver dependencies.