3. Megadata storage and management

In this section, we look at the problem of storing very large volumes of data for analysis. First, we point out the limitations of relational databases and discuss the benefits of cloud computing. We then highlight the advantages for data storage and management of the MapReduce parallel programming model, and of the free quadric, Hadoop, which implements it. Next, we introduce the various NoSQL database models, representing different solutions for storing megadata. Finally, we look at a few alternatives, including NewSQL databases.