alleryStart learning →A data mart differs from a data warehouse in which way?
AIt deals with a single area of data
BIt holds only data older than one year
CIt stores data without any indexing at all
DIt is shared between two separate companies
Answer & Solution
Correct answer: A. It deals with a single area of data
1. Data warehouses may contain many data marts.
2. Data marts are special subsets of a warehouse that each deal with a single area of data.
3. They are organized for quick analysis.
4. Age of data, absence of indexing, and shared ownership are not what defines a mart.
_Source: OpenStax Introduction to Business (CC BY 4.0), Ch 13 "Using Technology to Manage Information", section 13.3 Decisions, Decisions: Management Support Systems_
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