Hope below can help u:
What Are the Ways Data Can Be Stored?
Currently, the data lake stores data on FusionInsight HD&LibrA and Oracle platforms. Where data is stored, and how to store it, depends on which of the two categories it belongs to:
1. Data that is of high value and in demand, such as FIN (financial) data, is mainly stored on the FusionInsight LibrA or Oracle platforms.
2. Data that is novel and unstructured, such as images, videos, and maps, is mainly stored on the FusionInsight HD platform.
3. Each source data system connects to its corresponding platform. For example, a relational database connects to the Oracle database while a Hadoop system connects to FusionInsight HD.
4. Data to be stored is prioritized by service digitalization maturity. For example, the IT data, manufacturing data, and R&D code come from business domains of different digitalization maturity and therefore are stored differently.
https://e.huawei.com/en/publications/global/product-insights/201809291444/cool tech/201809301527