關於「Oracle primary key index」標籤，搜尋引擎有相關的訊息討論：

Primary Key | Richard Foote's Oracle Blogrichardfoote.wordpress.com › category › primary-keyHow does Oracle know whether the index belongs to the primary key?asktom.oracle.com › pls › apex › asktom.search › tag=how...Difference Between Unique Index and Primary Key Index - Ask T