A data mart is a subset of data from a data lake or data warehouse, tailored to the needs of a specific department or team.
A data mart makes it easy to access and analyse the data needed, without having to sift through all of the data in the data lake or data warehouse.
| Data mart | is subset of | data lake |
| Data mart | is subset of | data warehouse |
Rani, Isha (2023). Key data terms explained. LinkedIn Post.