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Entities prefixed with 'old' are deprecated.  The underlying table names remain unchanged by explicitly specifying the corresponding table name (see the table-name attribute in the entity definition).

When changing an entity significantly, and especially when changing the primary key, always deprecate the existing entity and create a new one so that an upgrade path for existing databases is possible. To facilitate this in addition to deprecating the old entity (prefixing with "old") and defining the new one you should always create a service to move data from the old entity to the new one.

Common

The Common package is meant to contain entities that are for general use and may be used by entities in many other packages.

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