Is a fact table in normalized or de-normalized form?

Question

I did a bit R&D on the fact tables, whether they are normalized or de-normalized. I came across some findings which make me confused.

According to Kimball:

Answer 1

Most people working with a data warehouse are familiar with transactional RDBMS and apply various levels of normalization, so those concepts are used to describe working a star schema. What they're doing is trying to get you to unlearn all those normalization habits. This can get confusing because there is a tendency to focus on what "not" to do.

The fact table(s) will probably be the most normalized since they usually contain just numerical values along with various id's for linking to dimensions. They key with fact tables is how granular do you need to get with your data. An example for Purchases could be specific line items by product in an order or aggregated at a daily, weekly, monthly level.

My suggestion is to keep searching and studying how to design a warehouse based on your needs. Don't look to get to high levels of normalized forms. Think more about the reports you want to generate and the analysis capabilities to give your users.