r4r:hasLicense: declares the use of license information for RRObject and its subclass when RRPolicy is not ready to use. It is used as the basic relation description for resource publication.
r4r:hasLicense: 當資源的RRPolicy尚未準備使用,則可藉由r4r:hasLicense 宣告 RRObject 與其授權資訊的關聯。它所描述的是資源發佈狀態的基本關聯性。