data mart - significado y definición. Qué es data mart
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Qué (quién) es data mart - definición

ACCESS PATTERN IN DATA WAREHOUSE ENVIRONMENTS, USED TO RETRIEVE CLIENT-FACING DATA PERTAINING TO A SINGLE DEPARTMENT, SO THAT EACH DEPARTMENT ISOLATES THE USE OF ITS OWN DATA
Datamart; Data market; Data marts builder

data mart         
<database> A type of data warehouse designed primarily to address a specific function or department's needs, as opposed to a data warehouse which is traditionally meant to address the needs of the organisation from an enterprise perspective. In addition, a data mart often uses aggregation or summarisation of the data to enhance query performance. However, it is important to maintain the ability to access the underlying base data to enable drill-down analysis as necessary. (1998-04-24)
Data mart         
A data mart is a structure / access pattern specific to data warehouse environments, used to retrieve client-facing data. The data mart is a subset of the data warehouse and is usually oriented to a specific business line or team.
Mart-Olav Niklus         
  • Mart Niklus
ESTONIAN POLITICIAN
Mart Niklus
Mart-Olav Niklus (born 22 September 1934 Tartu) is an Estonian ornithologist, dissident and politician. He was a member of VII Riigikogu.

Wikipedia

Data mart

A data mart is a structure/access pattern specific to data warehouse environments, used to retrieve client-facing data. The data mart is a subset of the data warehouse and is usually oriented to a specific business line or team. Whereas data warehouses have an enterprise-wide depth, the information in data marts pertains to a single department. In some deployments, each department or business unit is considered the owner of its data mart including all the hardware, software and data. This enables each department to isolate the use, manipulation and development of their data. In other deployments where conformed dimensions are used, this business unit owner will not hold true for shared dimensions like customer, product, etc.

Warehouses and data marts are built because the information in the database is not organized in a way that makes it readily accessible. This organization requires queries that are too complicated, difficult to access or resource intensive.

While transactional databases are designed to be updated, data warehouses or marts are read only. Data warehouses are designed to access large groups of related records. Data marts improve end-user response time by allowing users to have access to the specific type of data they need to view most often, by providing the data in a way that supports the collective view of a group of users.

A data mart is basically a condensed and more focused version of a data warehouse that reflects the regulations and process specifications of each business unit within an organization. Each data mart is dedicated to a specific business function or region. This subset of data may span across many or all of an enterprise's functional subject areas. It is common for multiple data marts to be used in order to serve the needs of each individual business unit (different data marts can be used to obtain specific information for various enterprise departments, such as accounting, marketing, sales, etc.).

The related term spreadmart is a pejorative describing the situation that occurs when one or more business analysts develop a system of linked spreadsheets to perform a business analysis, then grow it to a size and degree of complexity that makes it nearly impossible to maintain. The term for this condition is "Excel Hell".

Ejemplos de uso de data mart
1. After STAR has received the names of persons of interest, it runs them through an FBI "data mart" that includes classified and unclassified information from the government, airlines and commercial data brokers such as ChoicePoint.