In UDDI version 2, two types of taxonomies are supported that were not possible in UDDI version 1. These are unchecked and checked categorization and identification taxonomies.

• 在UDDI规范第2版中能够支持两种不同的分类法(在UDDI规范第1版中是不提供的)，他们是未校验(unchecked)和已校验(checked)类别和标识分类法。