<s>
Microsoft	B-Application
SQL	I-Application
Server	I-Application
Analysis	O
Services	O
(	O
SSAS	O
)	O
is	O
an	O
online	B-Application
analytical	I-Application
processing	I-Application
(	O
OLAP	B-Application
)	O
and	O
data	B-Application
mining	I-Application
tool	O
in	O
Microsoft	B-Application
SQL	I-Application
Server	I-Application
.	O
</s>
<s>
Microsoft	O
has	O
included	O
a	O
number	O
of	O
services	O
in	O
SQL	B-Language
Server	O
related	O
to	O
business	B-General_Concept
intelligence	I-General_Concept
and	O
data	O
warehousing	O
.	O
</s>
<s>
Analysis	O
Services	O
includes	O
a	O
group	O
of	O
OLAP	B-Application
and	O
data	B-Application
mining	I-Application
capabilities	O
and	O
comes	O
in	O
two	O
flavors	O
multidimensional	O
and	O
tabular	O
,	O
where	O
the	O
difference	O
between	O
the	O
two	O
is	O
how	O
the	O
data	O
is	O
presented	O
.	O
</s>
<s>
In	O
1996	O
,	O
Microsoft	O
began	O
its	O
foray	O
into	O
the	O
OLAP	B-Application
Server	O
business	O
by	O
acquiring	O
the	O
OLAP	B-Application
software	O
technology	O
from	O
Canada-based	O
Panorama	O
Software	O
.	O
</s>
<s>
Just	O
over	O
two	O
years	O
later	O
,	O
in	O
1998	O
,	O
Microsoft	O
released	O
OLAP	B-Application
Services	I-Application
as	O
part	O
of	O
SQL	B-Language
Server	O
7	O
.	O
</s>
<s>
OLAP	B-Application
Services	I-Application
supported	O
MOLAP	O
,	O
ROLAP	O
,	O
and	O
HOLAP	O
architectures	O
,	O
and	O
it	O
used	O
OLE	B-Language
DB	I-Language
for	O
OLAP	B-Application
as	O
the	O
client	O
access	O
API	O
and	O
MDX	B-Language
as	O
a	O
query	B-Language
language	I-Language
.	O
</s>
<s>
It	O
was	O
renamed	O
from	O
"	O
OLAP	B-Application
Services	I-Application
"	O
due	O
to	O
the	O
inclusion	O
of	O
data	B-Application
mining	I-Application
services	O
.	O
</s>
<s>
Analysis	O
Services	O
2000	O
was	O
considered	O
an	O
evolutionary	O
release	O
,	O
since	O
it	O
was	O
built	O
on	O
the	O
same	O
architecture	O
as	O
OLAP	B-Application
Services	I-Application
and	O
was	O
therefore	O
backward	B-General_Concept
compatible	I-General_Concept
with	O
it	O
.	O
</s>
<s>
Other	O
features	O
were	O
dimension	O
security	O
,	O
distinct	O
count	O
,	O
connectivity	O
over	O
HTTP	B-Protocol
,	O
session	O
cubes	O
,	O
grouping	O
levels	O
,	O
and	O
many	O
others	O
.	O
</s>
<s>
In	O
2005	O
,	O
Microsoft	O
released	O
the	O
next	O
generation	O
of	O
OLAP	B-Application
and	O
data	B-Application
mining	I-Application
technology	O
as	O
Analysis	O
Services	O
2005	O
.	O
</s>
<s>
It	O
maintained	O
backward	B-General_Concept
compatibility	I-General_Concept
on	O
the	O
API	O
level	O
:	O
although	O
applications	O
written	O
with	O
OLE	B-Language
DB	I-Language
for	O
OLAP	B-Application
and	O
MDX	B-Language
continued	O
to	O
work	O
,	O
the	O
architecture	O
of	O
the	O
product	O
was	O
completely	O
different	O
.	O
</s>
<s>
The	O
key	O
events	O
in	O
the	O
history	O
of	O
Microsoft	B-Application
Analysis	I-Application
Services	I-Application
cover	O
a	O
period	O
starting	O
in	O
1996	O
.	O
</s>
<s>
Microsoft	B-Application
Analysis	I-Application
Services	I-Application
takes	O
a	O
neutral	O
position	O
in	O
the	O
MOLAP	O
vs.	O
ROLAP	O
arguments	O
among	O
OLAP	B-Application
products	O
.	O
</s>
<s>
MOLAP	O
-	O
Multidimensional	O
OLAP	B-Application
-	O
Both	O
fact	O
data	O
and	O
aggregations	O
are	O
processed	O
,	O
stored	O
,	O
and	O
indexed	O
using	O
a	O
special	O
format	O
optimized	O
for	O
multidimensional	O
data	O
.	O
</s>
<s>
ROLAP	O
-	O
Relational	O
OLAP	B-Application
-	O
Both	O
fact	O
data	O
and	O
aggregations	O
remain	O
in	O
the	O
relational	O
data	O
source	O
,	O
eliminating	O
the	O
need	O
for	O
special	O
processing	O
.	O
</s>
<s>
HOLAP	O
-	O
Hybrid	O
OLAP	B-Application
-	O
This	O
mode	O
uses	O
the	O
relational	O
data	O
source	O
to	O
store	O
the	O
fact	O
data	O
,	O
but	O
pre-processes	O
aggregations	O
and	O
indexes	O
,	O
storing	O
these	O
in	O
a	O
special	O
format	O
,	O
optimized	O
for	O
multidimensional	O
data	O
.	O
</s>
<s>
Microsoft	B-Application
Analysis	I-Application
Services	I-Application
supports	O
different	O
sets	O
of	O
APIs	O
and	O
object	O
models	O
for	O
different	O
operations	O
and	O
in	O
different	O
programming	O
environments	O
.	O
</s>
<s>
XML	B-Protocol
for	O
Analysis	O
-	O
The	O
lowest	O
level	O
API	O
.	O
</s>
<s>
OLE	B-Language
DB	I-Language
for	O
OLAP	B-Application
-	O
Extension	O
of	O
OLEDB	B-Language
.	O
</s>
<s>
COM	B-Application
based	O
and	O
suitable	O
for	O
C/C	O
++	O
programs	O
on	O
Windows	B-Application
platform	O
.	O
</s>
<s>
ADOMD	O
-	O
Extension	O
of	O
ADO	B-Library
.	O
</s>
<s>
COM	B-Application
Automation	O
based	O
and	O
suitable	O
for	O
VB	B-Language
programs	O
on	O
Windows	B-Application
platform	O
.	O
</s>
<s>
ADOMD.NET	B-Application
-	O
Extension	O
of	O
ADO.NET	B-Device
.	O
</s>
<s>
COM	B-Application
Automation	O
based	O
and	O
suitable	O
for	O
VB	B-Language
programs	O
on	O
Windows	B-Application
platform	O
.	O
</s>
<s>
DDL	O
in	O
Analysis	O
Services	O
is	O
XML	B-Protocol
based	O
and	O
supports	O
commands	O
such	O
as	O
<Create>, <Alter>, <Delete>, and <Process>	O
.	O
</s>
<s>
For	O
data	B-Application
mining	I-Application
models	O
import	O
and	O
export	O
,	O
it	O
also	O
supports	O
PMML	B-Application
.	O
</s>
