This module focuses on understanding common methods for loading data into Delta tables, particularly when building a Bronze Layer for raw data storage. We will explore INSERT INTO and INSERT OVERWRITE, highlighting their differences, limitations, and a more efficient alternative.
Additionally, we will cover how to streamline data ingestion using the COPY INTO command with Directory Listing. This approach automates file scanning and loading, eliminating manual intervention while ensuring that only new data is processed. Mastering these techniques is crucial for efficient, scalable, and clean data ingestion in Databricks, especially when handling large-scale datasets.