ELT

Reading Complex XML in SQL Server — Shredding a Thousand Attributes Generically Instead of Looping for Hours

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A catalog of around 3000 product configurations arrives as XML. Depending on the equipment, a configuration carries different and additional attributes, around a thousand across all variants. In an earlier project, the evaluation of such a catalog ran in application code: a loop over the object types, inside it a loop over the attributes, plus … Read more

ETL vs. ELT — How to Tell Which Pattern You Actually Built

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“We do ETL.” You hear it in almost every data team — and it is often wrong. If every transformation runs as a stored procedure after the raw data has already been loaded, unchanged, into a staging table, then what you have is really ELT. The label hides what is actually happening. The difference between ETL vs. ELT is … Read more