管理源控制系统中程序所有权的有效方法是什么？

Using SVN or Git the thought had occurred to me to use the directory structure as a meta data place holder. Each team would have a directory in a shared repository for their code. The more I think about it though the worse the idea seems. The reason it appears like a bad idea to me is that teams are not static entities. Teams can vanish, split up, recombine, and even get a new name. I know I am looking at using a unique identifier and probably an external database. I am probably even facing a per team repository to manage access rights appropriately. In a situation with 200 or more teams, am I best off maintaining ownership in an external database or are there some tools and practices I could learn from?Using SVN or Git the thought had occurred to me