<s>
A	O
data	B-General_Concept
mart	I-General_Concept
is	O
a	O
structure/access	O
pattern	O
specific	O
to	O
data	O
warehouse	O
environments	O
,	O
used	O
to	O
retrieve	O
client-facing	O
data	O
.	O
</s>
<s>
The	O
data	B-General_Concept
mart	I-General_Concept
is	O
a	O
subset	O
of	O
the	O
data	O
warehouse	O
and	O
is	O
usually	O
oriented	O
to	O
a	O
specific	O
business	O
line	O
or	O
team	O
.	O
</s>
<s>
Whereas	O
data	O
warehouses	O
have	O
an	O
enterprise-wide	O
depth	O
,	O
the	O
information	O
in	O
data	B-General_Concept
marts	I-General_Concept
pertains	O
to	O
a	O
single	O
department	O
.	O
</s>
<s>
In	O
some	O
deployments	O
,	O
each	O
department	O
or	O
business	O
unit	O
is	O
considered	O
the	O
owner	O
of	O
its	O
data	B-General_Concept
mart	I-General_Concept
including	O
all	O
the	O
hardware	O
,	O
software	O
and	O
data	O
.	O
</s>
<s>
Warehouses	O
and	O
data	B-General_Concept
marts	I-General_Concept
are	O
built	O
because	O
the	O
information	O
in	O
the	O
database	O
is	O
not	O
organized	O
in	O
a	O
way	O
that	O
makes	O
it	O
readily	O
accessible	O
.	O
</s>
<s>
Data	B-General_Concept
marts	I-General_Concept
improve	O
end-user	O
response	O
time	O
by	O
allowing	O
users	O
to	O
have	O
access	O
to	O
the	O
specific	O
type	O
of	O
data	O
they	O
need	O
to	O
view	B-Language
most	O
often	O
,	O
by	O
providing	O
the	O
data	O
in	O
a	O
way	O
that	O
supports	O
the	O
collective	O
view	B-Language
of	O
a	O
group	O
of	O
users	O
.	O
</s>
<s>
A	O
data	B-General_Concept
mart	I-General_Concept
is	O
basically	O
a	O
condensed	O
and	O
more	O
focused	O
version	O
of	O
a	O
data	O
warehouse	O
that	O
reflects	O
the	O
regulations	O
and	O
process	O
specifications	O
of	O
each	O
business	O
unit	O
within	O
an	O
organization	O
.	O
</s>
<s>
Each	O
data	B-General_Concept
mart	I-General_Concept
is	O
dedicated	O
to	O
a	O
specific	O
business	O
function	O
or	O
region	O
.	O
</s>
<s>
It	O
is	O
common	O
for	O
multiple	O
data	B-General_Concept
marts	I-General_Concept
to	O
be	O
used	O
in	O
order	O
to	O
serve	O
the	O
needs	O
of	O
each	O
individual	O
business	O
unit	O
(	O
different	O
data	B-General_Concept
marts	I-General_Concept
can	O
be	O
used	O
to	O
obtain	O
specific	O
information	O
for	O
various	O
enterprise	O
departments	O
,	O
such	O
as	O
accounting	O
,	O
marketing	O
,	O
sales	O
,	O
etc	O
.	O
</s>
<s>
The	O
related	O
term	O
spreadmart	O
is	O
a	O
pejorative	O
describing	O
the	O
situation	O
that	O
occurs	O
when	O
one	O
or	O
more	O
business	O
analysts	O
develop	O
a	O
system	O
of	O
linked	O
spreadsheets	B-Application
to	O
perform	O
a	O
business	O
analysis	O
,	O
then	O
grow	O
it	O
to	O
a	O
size	O
and	O
degree	O
of	O
complexity	O
that	O
makes	O
it	O
nearly	O
impossible	O
to	O
maintain	O
.	O
</s>
<s>
Does	O
not	O
necessarily	O
use	O
a	O
dimensional	B-Application
model	I-Application
but	O
feeds	O
dimensional	O
models	O
.	O
</s>
<s>
Data	B-General_Concept
mart	I-General_Concept
:	O
</s>
<s>
Is	O
built	O
focused	O
on	O
a	O
dimensional	B-Application
model	I-Application
using	O
a	O
star	B-Application
schema	I-Application
.	O
</s>
<s>
According	O
to	O
the	O
Inmon	O
school	O
of	O
data	O
warehousing	O
,	O
a	O
dependent	O
data	B-General_Concept
mart	I-General_Concept
is	O
a	O
logical	O
subset	O
(	O
view	B-Language
)	O
or	O
a	O
physical	O
subset	O
(	O
extract	O
)	O
of	O
a	O
larger	O
data	O
warehouse	O
,	O
isolated	O
for	O
one	O
of	O
the	O
following	O
reasons	O
:	O
</s>
<s>
Performance	O
:	O
to	O
offload	O
the	O
data	B-General_Concept
mart	I-General_Concept
to	O
a	O
separate	O
computer	O
for	O
greater	O
efficiency	O
or	O
to	O
eliminate	O
the	O
need	O
to	O
manage	O
that	O
workload	O
on	O
the	O
centralized	O
data	O
warehouse	O
.	O
</s>
<s>
According	O
to	O
the	O
Inmon	O
school	O
of	O
data	O
warehousing	O
,	O
tradeoffs	O
inherent	O
with	O
data	B-General_Concept
marts	I-General_Concept
include	O
limited	O
scalability	B-Architecture
,	O
duplication	B-General_Concept
of	I-General_Concept
data	I-General_Concept
,	O
data	B-General_Concept
inconsistency	I-General_Concept
with	O
other	O
silos	O
of	O
information	O
,	O
and	O
inability	O
to	O
leverage	O
enterprise	O
sources	O
of	O
data	O
.	O
</s>
<s>
In	O
his	O
view	B-Language
,	O
a	O
data	O
warehouse	O
is	O
nothing	O
more	O
than	O
the	O
union	O
of	O
all	O
the	O
data	B-General_Concept
marts	I-General_Concept
.	O
</s>
<s>
This	O
view	B-Language
helps	O
to	O
reduce	O
costs	O
and	O
provides	O
fast	O
development	O
,	O
but	O
can	O
create	O
an	O
inconsistent	O
data	O
warehouse	O
,	O
especially	O
in	O
large	O
organizations	O
.	O
</s>
<s>
Therefore	O
,	O
Kimball	O
's	O
approach	O
is	O
more	O
suitable	O
for	O
small-to-medium	O
corporations	O
.	O
</s>
