.. _session_toplevel: ================= Using the Session ================= .. module:: sqlalchemy.orm.session The declarative base and ORM mapping functions described at :ref:`mapper_config_toplevel` are the primary configurational interface for the ORM. Once mappings are configured, the primary usage interface for persistence operations is the :class:`.Session`. .. toctree:: :maxdepth: 3 session_basics session_state_management cascades session_transaction persistence_techniques contextual session_events session_api