Understand the default ordering of model

I was going through meta class in Django model and wanted to know about the default parameters that are given to the Meta options. I do want to know about the default value for all meta options, but I think I know about some of them(the ones mentioned in the document). For instance, what is the default ordering parameter of the model

Whatever the database does without ordering. For most databases this tends to be “it could be any possible order; sometimes you’ll see a pattern but don’t rely on this.”