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

---
id: 5e7b9f180b6c005b0e76f08c
title: Relational Database Design
challengeType: 11
videoId: AqdfbrpkbHk
bilibiliIds:
  aid: 504388066
  bvid: BV1Qg411j742
  cid: 377532216
dashedName: relational-database-design
---

# --question--

## --text--

What is the best practice for how many times a piece of string data should be stored in a database?

## --answers--

0

---

1

---

2

---

3

## --video-solution--

2
feat(learn): add python video challenges (#38424) 2020-04-06 14:49:56 -04:00			`---`
			`id: 5e7b9f180b6c005b0e76f08c`
fix: rename titles for better UX 2020-04-21 23:37:02 -05:00			`title: Relational Database Design`
feat(learn): add python video challenges (#38424) 2020-04-06 14:49:56 -04:00			`challengeType: 11`
			`videoId: AqdfbrpkbHk`
feat(i18n,curriculum): add Bilibili ids for Chinese (#43564) Co-authored-by: Kristofer Koishigawa <scissorsneedfoodtoo@gmail.com> Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com> 2021-10-01 12:24:12 +08:00			`bilibiliIds:`
			`aid: 504388066`
			`bvid: BV1Qg411j742`
			`cid: 377532216`
feat(curriculum): restore seed + solution to Chinese (#40683) * feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com> 2021-01-13 03:31:00 +01:00			`dashedName: relational-database-design`
feat(learn): add python video challenges (#38424) 2020-04-06 14:49:56 -04:00			`---`

Feat: add new Markdown parser (#39800) and change all the challenges to new `md` format. 2020-11-27 19:02:05 +01:00			`# --question--`

			`## --text--`

			`What is the best practice for how many times a piece of string data should be stored in a database?`

			`## --answers--`

			`0`

			`---`

			`1`

			`---`

			`2`

			`---`

			`3`

			`## --video-solution--`

			`2`