<s>
Data	B-Language
Analysis	I-Language
Expressions	I-Language
(	O
DAX	O
)	O
is	O
the	O
native	O
formula	O
and	O
query	B-Language
language	I-Language
for	O
Microsoft	O
PowerPivot	B-Operating_System
,	O
Power	B-Application
BI	I-Application
Desktop	O
and	O
SQL	B-Application
Server	I-Application
Analysis	I-Application
Services	I-Application
(	O
SSAS	O
)	O
Tabular	O
models	O
.	O
</s>
<s>
DAX	O
includes	O
some	O
of	O
the	O
functions	O
that	O
are	O
used	O
in	O
Excel	B-Application
formulas	O
with	O
additional	O
functions	O
that	O
are	O
designed	O
to	O
work	O
with	O
relational	B-Architecture
data	I-Architecture
and	O
perform	O
dynamic	O
aggregation	O
.	O
</s>
<s>
It	O
is	O
,	O
in	O
part	O
,	O
an	O
evolution	O
of	O
the	O
Multidimensional	B-Language
Expression	I-Language
(	O
MDX	O
)	O
language	O
developed	O
by	O
Microsoft	O
for	O
Analysis	O
Services	O
multidimensional	O
models	O
(	O
often	O
called	O
cubes	O
)	O
combined	O
with	O
Excel	B-Application
formula	O
functions	O
.	O
</s>
<s>
It	O
is	O
designed	O
to	O
be	O
simple	O
and	O
easy	O
to	O
learn	O
,	O
while	O
exposing	O
the	O
power	O
and	O
flexibility	O
of	O
PowerPivot	B-Operating_System
and	O
SSAS	O
tabular	O
models	O
.	O
</s>
<s>
The	O
Data	B-Language
Analysis	I-Language
Expressions	I-Language
(	O
DAX	O
)	O
language	O
provides	O
a	O
specialized	O
syntax	O
for	O
querying	O
Analysis	O
Services	O
tabular	O
model	O
.	O
</s>
<s>
DAX	O
is	O
primarily	O
a	O
formula	O
language	O
and	O
is	O
also	O
a	O
query	B-Language
language	I-Language
.	O
</s>
<s>
The	O
same	O
Analysis	O
Services	O
engine	O
for	O
Tabular	O
models	O
is	O
also	O
used	O
in	O
Power	B-Application
BI	I-Application
and	O
Power	B-Operating_System
Pivot	I-Operating_System
for	O
Excel	B-Application
.	O
</s>
<s>
Power	B-Application
BI	I-Application
also	O
uses	O
DAX	O
for	O
conditional	O
formatting	O
expressions	O
and	O
other	O
dynamic	O
properties	O
of	O
visual	O
components	O
.	O
</s>
<s>
DAX	O
was	O
developed	O
by	O
the	O
SQL	B-Application
Server	I-Application
Analysis	I-Application
Services	I-Application
team	O
at	O
Microsoft	O
as	O
part	O
of	O
Project	O
Gemini	O
and	O
released	O
in	O
2009	O
with	O
the	O
first	O
version	O
of	O
the	O
PowerPivot	B-Operating_System
for	O
Excel	B-Application
2010	O
Add-in	O
.	O
</s>
<s>
Both	O
DAX	O
and	O
MDX	O
can	O
be	O
used	O
to	O
query	O
PowerPivot	B-Operating_System
and	O
Tabular	O
models	O
,	O
however	O
only	O
MDX	O
may	O
be	O
used	O
to	O
query	O
multidimensional	O
SSAS	O
models	O
(	O
cubes	O
)	O
in	O
versions	O
of	O
SSAS	O
up	O
to	O
SQL	B-Application
Server	I-Application
2012	O
RTM	O
.	O
</s>
<s>
2016	O
marks	O
a	O
significant	O
improvement	O
with	O
the	O
rapid	O
adoption	O
of	O
Microsoft	B-Application
Power	I-Application
BI	I-Application
and	O
SQL	B-Application
Server	I-Application
2016	O
.	O
</s>
<s>
Power	B-Application
BI	I-Application
is	O
a	O
subscription-based	O
self-service	O
analytic	O
tool	O
and	O
Power	B-Application
BI	I-Application
Desktop	O
is	O
a	O
desktop	O
analytic	O
and	O
report	O
authoring	O
application	O
.	O
</s>
<s>
SQL	B-Application
Server	I-Application
2016	O
includes	O
a	O
new	O
release	O
of	O
SQL	O
Analysis	O
Services	O
Tabular	O
with	O
many	O
improvements	O
over	O
previous	O
versions	O
.	O
</s>
<s>
The	O
BLOB	B-General_Concept
(	O
binary	B-General_Concept
large	I-General_Concept
object	I-General_Concept
)	O
data	O
type	O
is	O
managed	O
by	O
the	O
Tabular	O
model	O
but	O
cannot	O
be	O
directly	O
manipulated	O
by	O
DAX	O
expressions	O
.	O
</s>
