Use Pseudonymized Column as Grouping Key
One of the biggest headache for data engineer like me is how to assure data security when extracting data. Especially personal information should be dealt sensitively, otherwise I may be punished by each region’s law (e.g. GDPR).
When I operate Celonis EMS, I try not to extract sensitive information from the beginning, for example I do not extract table of customer address (ADRC table in SAP etc.). But this information is sometimes effective for grouping key of counting case etc.
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