a positional argument; see that class for full detail on the
structure of the argument.
- Contrast this argument to ``server_default`` which creates a
- default generator on the database side.
+ Contrast this argument to :paramref:`.Column.server_default`
+ which creates a default generator on the database side.
+
+ .. seealso::
+
+ :ref:`metadata_defaults_toplevel`
:param doc: optional String that can be used by the ORM or similar
to document attributes. This attribute does not render SQL
construct does not specify any DDL and the implementation is left
to the database, such as via a trigger.
+ .. seealso::
+
+ :ref:`server_defaults`
+
:param server_onupdate: A :class:`.FetchedValue` instance
representing a database-side default generation function. This
indicates to SQLAlchemy that a newly generated value will be