We have a large amount of data, and processing this data takes days.
Therefore, we want to establish a BUS system in the database, but we have no idea about this architecture.
Can someone who knows BUS architecture explain it, or can you tell me where and how I can learn about it?

Note: When I searched for BUS architecture on Google, I encountered irrelevant sources.

I want to use bus architecture for data optimization and I am looking for resources to learn about this architecture.