What is the difference between a data warehouse and a data mart?
Answers were Sorted based on User's Feedback
Answer / guest
Dataware house: It is a collection of data marts.
Represents historical data.
Data mart: It is a sub set of data ware housing.
It can provide the data to analyze query reporting
|Is This Answer Correct ?||69 Yes||18 No|
Answer / thakkalpelly anil
a data warehouse is a relational database which is
specially designed for analysis purpose rather then for
a datmart is subject oriented database which gives the data
about each and every individual department in an
|Is This Answer Correct ?||47 Yes||9 No|
Answer / mallika
Data Mart is subject oriented likes sales finance,etc..It
gets data from few no.of sources.It is maintained
data warehouse consists of all subjects.Its an integrated
structure.it gets data from more number of sources.It is
maintained Centrally.Group of datamarts make a datawarehouse
|Is This Answer Correct ?||39 Yes||5 No|
Answer / prasanta
Data Warehouse is used on an enterprise level, while Data
Marts is used on a business division/department level. A
data mart only contains the required subject specific data
for local analysis.
|Is This Answer Correct ?||30 Yes||1 No|
Answer / jaya
datamart is something which consists of only one type of
data whereas datwarehouse consists of data of different
type.For example all the organisation data say data related
to finance department,HR,Banking dept are stored in
datawarehouse whereas in datamart say only finance data
will stored.So datawarehouse is a collection of different
|Is This Answer Correct ?||19 Yes||5 No|
Answer / harshad
DW Will be your target for historical data and will be use
Data Mart would be your Source for DW and will be subject
|Is This Answer Correct ?||22 Yes||12 No|
Answer / anonymous
data mart-A Data Mart is a specific, subject oriented,
repository of data designed to answer specific questions
for a specific set of users. So an organization could have
multiple data marts serving the needs of marketing, sales,
operations, collections, etc. A data mart usually is
organized as one dimensional model as a star-schema (OLAP
cube) made of a fact table and multiple dimension tables.
data warehouse-In contrast, a Data Warehouse (DW) is a
single organizational repository of enterprise wide data
across many or all subject areas. The Data Warehouse is the
authoritative repository of all the fact and dimension data
(that is also available in the data marts) at an atomic
|Is This Answer Correct ?||14 Yes||4 No|
Answer / naveen goyal
In Data warehouse, staging area is used for mapping and
integration of data collected from different sources, but in
data marts staging area is eliminated because data directly
transfers from various source systems to data marts.
|Is This Answer Correct ?||12 Yes||6 No|
Answer / sree
data mart is a scaled version of datawarehouse which
addresses to only a particular subject
datawarehouse is a database which allows to view the data
in different dimensions or perspectives
|Is This Answer Correct ?||9 Yes||4 No|
Answer / seetha
data mart is a subset of datawarehouse
data warehouse is a collection of hetrogeneous data
|Is This Answer Correct ?||3 Yes||0 No|
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