The Jaffle Shop is a fictional food delivery business. This project transforms raw transactional data from two source systems — an internal ordering system and Stripe payments — into clean, ...
1. How did you handle schema evolution in PySpark when reading data from Snowflake or S3? Schema evolution is handled using the mergeSchema option (for formats like Parquet). In Snowflake, we ...
Below is a comprehensive example that illustrates how you can implement each SCD type (1, 2, 3, 4, and 6) in Azure Synapse SQL Warehouse using T‑SQL. In these examples, we assume you have a staging ...
In data warehousing, it's common to track changes in your data over time. One of the key methods to manage these changes is through Slowly Changing Dimensions (SCD). Specifically, SCD Type 1 (SCD-1), ...
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