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
& analysis.

Answer / thakkalpelly anil

a data warehouse is a relational database which is
specially designed for analysis purpose rather then for
transactional purpose.


a datmart is subject oriented database which gives the data
about each and every individual department in an
organisation.

Answer / mallika

Data Mart is subject oriented likes sales finance,etc..It
gets data from few no.of sources.It is maintained
departmental wise.

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

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.

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
datamarts.

Answer / harshad

More Spcific

DW Will be your target for historical data and will be use
for Analysis.

Data Mart would be your Source for DW and will be subject
oriented.

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
level.

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.

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

Answer / seetha

data mart is a subset of datawarehouse

data warehouse is a collection of hetrogeneous data

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0 Answers  

2.What is staging area ?

4 Answers   HCL, IBM, iFlex, TCS,

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0 Answers  

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2 Answers  

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0 Answers  

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0 Answers  

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0 Answers  

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0 Answers  

What does level of granularity of a fact table signify?

0 Answers  

Hi, If any hav Informatica n DWH FAQ's,Plz do fwd to s.rajanikanth1980@gmail.com Thnx Vani

0 Answers  

What is real-time datawarehousing?

0 Answers