"By definition, this term refers to the procedure of analysing the huge volume of data in the instance it is produced or used. It is the procedure of acquiring important information at the very instance it is created in a data warehouse from the raw data. This form of big data analytics aims to focus on the real time analytics of big data within a live environment. It offers real time retrieval of big data that is stored within a specific system and running multiple analyses on it. This data is then sent to the user via a dashboard of analytics software."
https://medium.com/populous-world/pros-and-cons-of-real-time-big-data-analytics-77d6414ccd3