[Zope] ZClass with property linking to another object

Is there a way to have a ZClass with a property that, upon instantiation, can link the newly instantiated object to another object that already exists within the database? In other words, is there a way to establish a relationship between two objects in the database so that a search for related objects in one instance will bring up the other objects (be they the same class or not)? I have some "people" objects and I want to 'link' things about those people (i.e., things that they are responsible for or have created) in a way that I can hyperlink form the created object. Any ideas? Thanks in advance, Ron