For decades, relational databases remained essentially unchanged; data was segmented into specific chunks for columns, slots, and repositories, also called structured data. However, in this Internet of Things $($IoT$)$ era, databases need to be reengineered because the very nature of data has changed. Today$$s databases need to be developed with the needs of IoT in mind and have the ability to perform real$-$time processing to manage workloads that are dynamic. For example, relational databases should be able to work with real$-$time data streaming and big data $($an example was presented in the unit lesson$).$