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NoSQL databases are non-relational, open-source, distributed, schema-less, and cluster friendly databases. They are hugely popular today owing to their ability to scale out or scale horizontally and the adeptness at dealing with a rich variety of data: structured, semi-structured and unstructured data. They are malleable and flexible enough to accommodate sparse datasets, besides maintaining cost efficiency and availability.||About the Author||Seema Acharya is an Associate Vice President and Senior Lead Principal with the Education, Training and Assessment department of Infosys Limited. She is a technology evangelist, learning strategist and a passionate tech author with over 20 years of experience in conceptualizing, designing and implementing competency development/enhancement programs in alignment with business strategy to cater to short term as well as long term organizational goals.