https://www.guru99.com/database-normalization.html https://www.guru99.com/database-normalization.html You usually can get by with 4th normal form but go wild,

https://www.guru99.com/database-normalization.html https://www.guru99.com/database-normalization.html You usually can get by with 4th normal form but go wild, take it to 11 and it's all you should ever need.