package dependency (BC-DWB-TOO-PAK)

A package must normally declare its dependency on the packages whose repository objects it uses. Visible objects of a server package cannot be used by a client package unless a dependency has been declared by means of the dependency control list in the client package itself and inall of its superpackages up to the level at which the superpackage in question and the server package (or the superpackage of the server package) are parallel packages.Superpackages that use the visible repository objects in their subpackages are an exception to this rule. These superpackages do not define dependencies on their subpackages. This means that a package can always use all visible repository objects of its subpackages without declaring dependency.