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Hi there,
This is a question about data modelling.
I am no expert, but I understand the idea of foreign and primary keys for relationships.
Question - is it necessary or beneficial to create a column with an integer value in the lookup (dim) table as the key even if another column in text (e.g. country) is available to use as a key?
Thanks in advance.
Regards George
Solved! Go to Solution.
Hey @GeorgeFP ,
yes, integer is always the best option for the keys.
Like this the performance and also the amount of space in the data model have the best impact.
https://www.sqlbi.com/articles/the-importance-of-star-schemas-in-power-bi/
https://www.sqlbi.com/blog/marco/2017/10/02/why-data-modeling-is-important-in-powerbi/
If you need any help please let me know.
If I answered your question I would be happy if you could mark my post as a solution ✔️ and give it a thumbs up 👍
Best regards
Denis
Blog: WhatTheFact.bi
Follow me: twitter.com/DenSelimovic
Thank you Denis
Hey @GeorgeFP ,
yes, integer is always the best option for the keys.
Like this the performance and also the amount of space in the data model have the best impact.
https://www.sqlbi.com/articles/the-importance-of-star-schemas-in-power-bi/
https://www.sqlbi.com/blog/marco/2017/10/02/why-data-modeling-is-important-in-powerbi/
If you need any help please let me know.
If I answered your question I would be happy if you could mark my post as a solution ✔️ and give it a thumbs up 👍
Best regards
Denis
Blog: WhatTheFact.bi
Follow me: twitter.com/DenSelimovic
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