The difference between them is that the real-time database is small, the data update speed is fast, the amount of data that needs to be saved for a long time is small, the data collection area and area are small, and the network application area has a certain range of databases. The opposite of the above description can describe commercial databases.

For example, the production database of the factory and the database of large-scale online games are the former and the latter. The latter can be described as horror just because there are so many game user accounts to be saved.