One Schema or multiple Schemas ?

[Michael_Soprano]

I am doing project for a company which consists of 3 entities. 

Data Mart would ingest to CDP 4 datasets:

- data for entity 1

- data for entity 2

- data for entity 3

- combined customer view across all entities

Would you make ona schema or 4 schemas? Is it some max number of fields which schema 

[KumarRishii]

If the datasets are highly similar and managed by the same team, you could use one schema.

[KevinFosterDX]

I typically combine into one dataset when:

• the data is of the same class: profile, event, or custom
• the data will have the same primary identity
• the data is sourced from the same system
• the data will be sourced the same way: streaming vs batch

If you combine profile-class data into one dataset when all of that isn't true then you may end up forced to use "upserts" (partial record ingestion) with all of the limitations that comes with that.