Data modeling varies at different companies.

At facebook we had plenty of storage and often treated historical data modeling very differently compared to when I worked at an enterprise.

The concept of slowly changing dimensions wasn't as prevalent and instead we simply stored snapshots of data every day.

So let's talk about modeling historical data and how it varied.

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About me:
I have spent my career focused on all forms of data. I have focused on developing algorithms to detect fraud, reduce patient readmission and redesign insurance provider policy to help reduce the overall cost of healthcare. I have also helped develop analytics for marketing and IT operations in order to optimize limited resources such as employees and budget. I privately consult on data science and engineering problems both solo as well as with a company called Acheron Analytics. I have experience both working handson with technical problems as well as helping leadership teams develop strategies to maximize their data.

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