DATABASE FUNDAMENTALS
DATA WAREHOUSING AND DATA MINING
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A data mart is a subgroup of the data warehouse
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A data mart is another type of data warehouse
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A data mart is not actually related to data warehouses
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None of these
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Detailed explanation-1: -A data mart is a subset of a data warehouse focused on a particular line of business, department, or subject area. Data marts make specific data available to a defined group of users, which allows those users to quickly access critical insights without wasting time searching through an entire data warehouse.
Detailed explanation-2: -A data mart is a data storage system that contains information specific to an organization’s business unit. It contains a small and selected part of the data that the company stores in a larger storage system. Companies use a data mart to analyze department-specific information more efficiently.
Detailed explanation-3: -A Data Mart is focused on a single functional area of an organization and contains a subset of data stored in a Data Warehouse. A Data Mart is a condensed version of Data Warehouse and is designed for use by a specific department, unit or set of users in an organization.
Detailed explanation-4: -Size:a data mart is typically less than 100 GB; a data warehouse is typically larger than 100 GB and often a terabyte or more. Range: a data mart is limited to a single focus for one line of business; a data warehouse is typically enterprise-wide and ranges across multiple areas.
Detailed explanation-5: -An enterprise data warehouse provides an enterprise-wide view of an organization’s business operations, while a data mart delivers a more granular view of a specific business unit, subject area or other aspect of operations. In many cases, a data mart is a subset of the data warehouse in an organization. Data sources.