<s>
Neo4j	B-Language
is	O
a	O
graph	B-Application
database	I-Application
management	O
system	O
developed	O
by	O
Neo4j	B-Language
,	O
Inc	O
.	O
</s>
<s>
The	O
data	O
elements	O
Neo4j	B-Language
stores	O
are	O
nodes	B-Data_Structure
,	O
edges	O
connecting	O
them	O
,	O
and	O
attributes	O
of	O
nodes	B-Data_Structure
and	O
edges	O
.	O
</s>
<s>
Described	O
by	O
its	O
developers	O
as	O
an	O
ACID-compliant	O
transactional	O
database	O
with	O
native	O
graph	O
storage	O
and	O
processing	O
,	O
Neo4j	B-Language
is	O
available	O
in	O
a	O
non-open-source	B-License
"	O
community	O
edition	O
"	O
licensed	O
with	O
a	O
modification	O
of	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
,	O
with	O
online	B-General_Concept
backup	I-General_Concept
and	O
high	O
availability	O
extensions	O
licensed	O
under	O
a	O
closed-source	O
commercial	O
license	O
.	O
</s>
<s>
Neo	O
also	O
licenses	O
Neo4j	B-Language
with	O
these	O
extensions	O
under	O
closed-source	O
commercial	O
terms	O
.	O
</s>
<s>
Neo4j	B-Language
is	O
implemented	O
in	O
Java	B-Language
and	O
accessible	O
from	O
software	O
written	O
in	O
other	O
languages	O
using	O
the	O
Cypher	B-Language
query	I-Language
language	I-Language
through	O
a	O
transactional	O
HTTP	O
endpoint	O
,	O
or	O
through	O
the	O
binary	O
"	O
Bolt	B-Protocol
"	O
protocol	O
.	O
</s>
<s>
The	O
"	O
4j	O
"	O
in	O
Neo4j	B-Language
is	O
a	O
reference	O
to	O
its	O
being	O
built	O
in	O
Java	B-Language
,	O
however	O
is	O
now	O
largely	O
viewed	O
as	O
an	O
anachronism	O
.	O
</s>
<s>
Neo4j	B-Language
version	O
2.0	O
was	O
released	O
in	O
December	O
2013	O
.	O
</s>
<s>
Neo4j	B-Language
version	O
3.0	O
was	O
released	O
in	O
April	O
2016	O
.	O
</s>
<s>
In	O
November	O
2016	O
,	O
Neo4j	B-Language
successfully	O
secured	O
$36M	O
in	O
Series	O
D	O
Funding	O
led	O
by	O
Greenbridge	O
Partners	O
Ltd	O
.	O
</s>
<s>
In	O
November	O
2018	O
,	O
Neo4j	B-Language
successfully	O
secured	O
$80M	O
in	O
Series	O
E	O
Funding	O
led	O
by	O
One	O
Peak	O
Partners	O
and	O
Morgan	O
Stanley	O
Expansion	O
Capital	O
,	O
with	O
participation	O
from	O
other	O
investors	O
including	O
Creandum	O
,	O
Eight	O
Roads	O
and	O
Greenbridge	O
Partners	O
.	O
</s>
<s>
In	O
June	O
2021	O
,	O
Neo4j	B-Language
announced	O
another	O
round	O
of	O
funding	O
,	O
$325M	O
in	O
Series	O
F	O
.	O
</s>
<s>
Neo4j	B-Language
comes	O
in	O
five	O
editions	O
.	O
</s>
<s>
It	O
is	O
dual-licensed	O
:	O
GPL	B-License
v3	O
(	O
with	O
parts	O
of	O
the	O
code	O
under	O
AGPLv3	B-Application
with	O
Commons	O
Clause	O
)	O
,	O
and	O
a	O
proprietary	O
license	O
.	O
</s>
<s>
The	O
data	O
elements	O
are	O
nodes	B-Data_Structure
,	O
edges	O
which	O
connect	O
nodes	B-Data_Structure
to	O
one	O
another	O
,	O
and	O
attributes	O
of	O
nodes	B-Data_Structure
and	O
edges	O
.	O
</s>
<s>
Nodes	B-Data_Structure
and	O
edges	O
can	O
be	O
labelled	O
.	O
</s>
<s>
As	O
of	O
version	O
2.0	O
,	O
indexing	O
was	O
added	O
to	O
Cypher	B-Language
with	O
the	O
introduction	O
of	O
schemas	O
.	O
</s>
<s>
Previously	O
,	O
indexes	O
were	O
supported	O
separately	O
from	O
Cypher	B-Language
.	O
</s>
<s>
Neo4j	B-Language
is	O
developed	O
by	O
Neo4j	B-Language
,	O
Inc.	O
,	O
based	O
in	O
San	O
Mateo	O
,	O
California	O
,	O
United	O
States	O
,	O
and	O
also	O
in	O
Malmö	O
,	O
Sweden	O
.	O
</s>
<s>
The	O
Neo4j	B-Language
,	O
Inc	O
.	O
board	O
of	O
directors	O
consists	O
of	O
Michael	O
Treskow	O
(	O
Eight	O
Roads	O
)	O
,	O
Emanuel	O
Lang	O
(	O
Greenbridge	O
)	O
,	O
Christian	O
Jepsen	O
(	O
Sunstone	O
)	O
,	O
Denise	O
Persson	O
(	O
CMO	O
of	O
Snowflake	O
)	O
,	O
David	O
Klein	O
(	O
One	O
Peak	O
)	O
,	O
Nathalie	O
Kornhoff-Brüls	O
(	O
Eurazeo	O
)	O
,	O
Patrick	O
Pichette	O
(	O
Inovia	O
Capital	O
and	O
former	O
CFO	O
of	O
Google	O
)	O
,	O
and	O
Emil	O
Eifrem	O
(	O
CEO	O
of	O
Neo4j	B-Language
)	O
.	O
</s>
