The Evolution of Data Storage and the Rise of Data Lakes

This chapter explores the evolution of data storage from structured data in data warehouses to the emergence of unstructured NoSQL databases and the subsequent rise of data lakes. It discusses the separation of compute and storage in data lakes, the advantages of cloud storage services like S3 and ADLS, and the defining characteristics of a data lake. The chapter also covers the challenges of cataloging and organizing data stored in S3, the use of column-oriented formats like Parquet, the shift from ETL to ELT, and the transactional nature of data in data lakes.