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       DBIx::Class::Schema::Loader::Manual::UpgradingFromV4 - Important
       Information Related to Upgrading	from Version 0.04006

What Changed
       o   add_column

	   The new Loader detects much more information	about columns and sets
	   flags like "is_auto_increment" that it didn't set before.

       o   RelBuilder

	   The new RelBuilder will give	you nicer accessor names for
	   relationships, so you will no longer	have conflicts between a
	   foreign key column and the relationship accessor itself (if the FK
	   is named "_id".)

	   It will also	more correctly infer the relationship type, e.g. some
	   relationships that were previously detected as a "has_many" will
	   now be a "might_have" (when it detects a unique constraint on the
	   foreign key column.)

	   Also	"cascade_delete" and "cascade_copy" are	turned off for by
	   default for "has_many" and "might_have" relationships, while
	   "belongs_to"	relationships are created with "on_delete =>
	   'CASCADE'" and "on_update =>	'CASCADE'" by default. This is
	   overridable via relationship_attrs.

       o   moniker_map

	   Table names are now singularized when determining the "Result"
	   class names.	So the table "user_roles" would	have become
	   "UserRoles" in 0.04006 but now becomes "UserRole" instead.

       o   use_namespaces

	   Now defaults	to on. See "use_namespaces" in
	   DBIx::Class::Schema::Loader::Base and "load_namespaces" in

       o   Support for more databases

	   We now support Microsoft SQL	Server and Sybase, and there are also
	   many	improvements to	the other backends.

Backward Compatibility
       In backward compatibility mode, the Loader will use the old
       relationship names and types, will not singularize monikers for tables,
       and "use_namespaces" will be off.

       To control this behavior	see "naming" in
       DBIx::Class::Schema::Loader::Base and "use_namespaces" in

   Static Schemas
       When reading a "" from a static	schema generated with an 0.04
       version of Loader, backward compatibility mode will default to on,
       unless overridden with the "naming" and/or "use_namespaces" attributes.

   Dynamic Schemas
       Dynamic schemas will always by default use 0.04006 mode and have
       "use_namespaces"	off.

       To upgrade a dynamic schema, set	the "naming" and "use_namespaces"
       attributes (which is proxied to the loader) in your "":


       See "AUTHORS" in	DBIx::Class::Schema::Loader.

       This library is free software; you can redistribute it and/or modify it
       under the same terms as Perl itself.

perl v5.32.1	       DBIx::Class::Schema::Loader::Manual::UpgradingFromV4(3)

NAME | What Changed | Backward Compatibility | AUTHORS | LICENSE

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