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freeCodeCamp/curriculum/challenges/chinese/07-scientific-computing-with-python/python-for-everybody/relational-database-design.md

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---
id: 5e7b9f180b6c005b0e76f08c
title: 关系数据库设计
challengeType: 11
videoId: AqdfbrpkbHk
bilibiliIds:
aid: 504388066
bvid: BV1Qg411j742
cid: 377532216
dashedName: relational-database-design
---
# --question--
## --text--
对于一个字符串数据应该被保存在一个数据库里多少次,最佳实践是什么?
## --answers--
0
---
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## --video-solution--
2