A database that stores unstructured data adopts an open structure to store data. Commonly used storage standards include key-value pairs, that is, keys corresponding to values, and the corresponding values can be of different lengths and types.
Main sources of data: Most of the data comes from outside the enterprise system
Data types are very scattered, including video formats, picture formats, and audio information
Only a few companies that do natural language processing, image recognition, and language recognition use non-relational databases to store data’
Mainstream non-relational database