What is a data mart in data warehousing?
Correspondingly, what is data mart in data warehouse with example?
A data mart is a subset of a data warehouse oriented to a specific business line. Data marts contain repositories of summarized data collected for analysis on a specific section or unit within an organization, for example, the sales department.
Subsequently, question is, what is data mart and its types? Three basic types of data marts are dependent, independent, and hybrid. Dependent data marts draw data from a central data warehouse that has already been created. Independent data marts, in contrast, are standalone systems built by drawing data directly from operational or external sources of data or both.
Considering this, what is the role of data mart in data warehousing?
A data mart is focused on a single functional area of an organization and contains a subset of data stored in a Data Warehouse. Data Mart helps to enhance user's response time due to a reduction in the volume of data.
What's the difference between a data warehouse and a data mart?
KEY DIFFERENCE Data Warehouse is a large repository of data collected from different sources whereas Data Mart is only subtype of a data warehouse. Data Warehouse is focused on all departments in an organization whereas Data Mart focuses on a specific group.