I have been putting together a series of posts and videos around building scd type 1 and type 2 using mapping data flows with azure data factory. It retains the full history of values. Type 2 scd allows you to preserve historical data by storing a new row each time a change is detected.
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In this blog,we implement type 2 slowly changing dimension (scd) in oracle cloud infrastructure (oci) data integration.
A design pattern for using surrogate keys to uniquely identify dimension records over time in data warehouses implementing slowly changing dimensions (scd).
It creates another dimension record. In dbt, this can be efficiently implemented using the surrogate_key() macro from. In this latest post, i’m going to walk. A new record is created.
When the slowly changing dimension (scd) stage performs a dimension lookup, it retrieves the value of the existing surrogate key if a matching record is found. If a match is not found, the stage obtains. In the previous tutorial (see implement surrogate keys using lakehouse and synapse mapping data flow), we’ve built an elt pipeline with surrogate key generation logic.
