--- id: 5e7b9f190b6c005b0e76f090 title: '关系型数据库:多对多关系' challengeType: 11 videoId: z-SBYcvEQOc bilibiliIds: aid: 291965127 bvid: BV1Af4y1L7BK cid: 377543409 dashedName: relational-databases-many-to-many-relationships --- # --description-- 更多资料: \- [练习:电子邮件](https://www.youtube.com/watch?v=uQ3Qv1z_Vao) \- [练习:名册](https://www.youtube.com/watch?v=qEkUEAz8j3o) \- [练习:曲目](https://www.youtube.com/watch?v=I-E7avcPeSE) \- [练习:推特好友](https://www.youtube.com/watch?v=RZRAoBFIH6A) \- [练习:推特爬虫](https://www.youtube.com/watch?v=xBaJddvJL4A) # --question-- ## --text-- 哪个是多对多关系的示例? ## --answers-- 老师与学生 --- 客户与订单 --- 书与内页 --- 城市与国家 ## --video-solution-- 1