Datamart
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Data Warehouse
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1.Data mart is usually sponsored
at the department level and developed with a specific issue or subject in mind, a data mart is a data warehouse with a focused objective.
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1.Data
warehouse is a “Subject-Oriented, Integrated, Time-Variant,
Nonvolatile collection of data in support of decision making”.
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2.A
data mart is used on a business division/ department
level.
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2.A
data warehouse is used on an enterprise level.
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3.A
Data Mart is a subset of data from a Data Warehouse. Data Marts are built for specific user groups.
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3.A
Data Warehouse is simply an integrated consolidation
of data from a variety of sources that
is specially designed to support strategic and
tactical decision making.
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4.By
providing decision makers with only a subset of data from the Data Warehouse, Privacy,
Performance and Clarity
Objectives can be attained.
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4.The
main objective of Data Warehouse is to provide an
integrated environment and coherent picture of
the business at a point in time.
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