is a centralized repository that stores large volume of data in raw format that is processed at the run time. It can collect data from multiple sources such as APIs, Files, databases, sensors, websites, etc. Unlike data warehouses, data lakes stores data is structured, semi-structured and unstructured format that makes them usable for machine learning and big data processing.

Variants

ETL

The typical extract, transform, load (ETL)-based data warehouse uses staging,

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