Data lake is a current and more expanded concept to represent Big Data. It addresses the limitations of concept of data warehouse that was invented in the 1990s. DWs were expensive and proprietary, and are often not flexible enough to handle the evolving needs of companies. A data lake is conceived to be a centralized repository where all your structured and unstructured data can flow in, speedily, at any scale, and typically dammed on a cloud storage platform. A data lake uses a flat architecture and object storage to store the data “as is,” without imposing a fixed schema or structure on
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