<s>
MarkLogic	B-Application
Server	I-Application
is	O
a	O
document-oriented	B-General_Concept
database	I-General_Concept
developed	O
by	O
MarkLogic	O
.	O
</s>
<s>
It	O
is	O
a	O
NoSQL	B-General_Concept
multi-model	B-Operating_System
database	I-Operating_System
that	O
evolved	O
from	O
an	O
XML	B-Application
database	I-Application
to	O
natively	O
store	O
JSON	B-General_Concept
documents	O
and	O
RDF	O
triples	O
,	O
the	O
data	O
model	O
for	O
semantics	O
.	O
</s>
<s>
MarkLogic	O
is	O
designed	O
to	O
be	O
a	O
data	B-Application
hub	I-Application
for	O
operational	O
and	O
analytical	B-Application
data	O
.	O
</s>
<s>
MarkLogic	B-Application
Server	I-Application
was	O
built	O
to	O
address	O
shortcomings	O
with	O
existing	O
search	O
and	O
data	O
products	O
.	O
</s>
<s>
The	O
product	O
first	O
focused	O
on	O
using	O
XML	B-Protocol
as	O
the	O
document	O
markup	O
standard	O
and	O
XQuery	B-Language
as	O
the	O
query	O
standard	O
for	O
accessing	O
collections	O
of	O
documents	O
up	O
to	O
hundreds	O
of	O
terabytes	O
in	O
size	O
.	O
</s>
<s>
In	O
addition	O
to	O
having	O
a	O
flexible	O
data	O
model	O
,	O
MarkLogic	O
uses	O
a	O
distributed	O
,	O
scale-out	B-Architecture
architecture	O
that	O
can	O
handle	O
hundreds	O
of	O
billions	O
of	O
documents	O
and	O
hundreds	O
of	O
terabytes	O
of	O
data	O
.	O
</s>
<s>
It	O
has	O
received	O
Common	O
Criteria	O
certification	O
,	O
and	O
has	O
high	O
availability	O
and	O
disaster	B-General_Concept
recovery	I-General_Concept
.	O
</s>
<s>
MarkLogic	O
is	O
designed	O
to	O
run	O
on-premises	O
and	O
within	O
public	O
or	O
private	O
cloud	O
environments	O
like	O
Amazon	B-Application
Web	I-Application
Services	I-Application
.	O
</s>
<s>
Data	O
can	O
be	O
searched	O
using	O
JavaScript	B-Language
,	O
XQuery	B-Language
,	O
SPARQL	O
,	O
and	O
SQL	O
.	O
</s>
<s>
Unlike	O
other	O
NoSQL	B-General_Concept
databases	O
,	O
MarkLogic	O
maintains	O
ACID	O
consistency	O
for	O
transactions	O
.	O
</s>
<s>
MarkLogic	O
scales	O
horizontally	O
using	O
sharding	B-General_Concept
.	O
</s>
<s>
 [ 3 ] 	O
Licenses	O
are	O
available	O
from	O
MarkLogic	O
or	O
directly	O
from	O
cloud	O
marketplaces	O
such	O
as	O
Amazon	B-Application
Web	I-Application
Services	I-Application
and	O
Microsoft	B-Application
Azure	I-Application
.	O
</s>
<s>
2015	O
—	O
MarkLogic	B-Application
Server	I-Application
8.0	O
:	O
Ability	O
to	O
store	O
JSON	B-General_Concept
data	O
and	O
process	O
data	O
using	O
JavaScript	B-Language
.	O
</s>
<s>
2017	O
—	O
MarkLogic	B-Application
Server	I-Application
9.0	O
:	O
Data	O
integration	O
across	O
Relational	O
and	O
Non-Relational	O
data	O
.	O
</s>
