<s>
DataNucleus	B-Application
(	O
formerly	O
known	O
as	O
Java	B-Language
Persistent	O
Objects	O
JPOX	B-Application
)	O
is	O
an	O
open	B-Application
source	I-Application
project	O
(	O
under	O
the	O
Apache	B-Application
2	I-Application
license	I-Application
)	O
which	O
provides	O
software	O
products	O
around	O
data	O
management	O
in	O
Java	B-Language
.	O
</s>
<s>
The	O
DataNucleus	B-Application
project	O
started	O
in	O
2008	O
(	O
the	O
JPOX	B-Application
project	O
started	O
in	O
2003	O
and	O
was	O
relaunched	O
as	O
DataNucleus	B-Application
in	O
2008	O
with	O
broader	O
scope	O
)	O
.	O
</s>
<s>
DataNucleus	B-Application
Access	O
Platform	O
is	O
a	O
fully	O
compliant	O
implementation	O
of	O
the	O
Java	B-Language
Data	I-Language
Objects	I-Language
(	O
JDO	O
)	O
1.0	O
,	O
2.0	O
,	O
2.1	O
,	O
2.2	O
,	O
3.0	O
,	O
3.1	O
,	O
3.2	O
specifications	O
(	O
JSR	O
0012	O
,	O
JSR	O
0243	O
)	O
and	O
the	O
Java	B-Language
Persistence	I-Language
API	I-Language
(	O
JPA	O
)	O
1.0	O
,	O
2.0	O
,	O
2.1	O
,	O
2.2	O
specifications	O
(	O
JSR	O
0220	O
,	O
JSR	O
0317	O
,	O
JSR	O
0338	O
)	O
,	O
providing	O
transparent	O
persistence	B-Application
of	O
Java	B-Language
objects	O
.	O
</s>
<s>
It	O
supports	O
persistence	B-Application
to	O
the	O
widest	O
range	O
of	O
datastores	O
of	O
any	O
Java	B-Language
persistence	B-Application
software	O
,	O
supporting	O
all	O
of	O
the	O
main	O
object-relational	B-General_Concept
mapping	I-General_Concept
(	O
ORM	O
)	O
patterns	O
,	O
allows	O
querying	O
using	O
either	O
JDOQL	O
,	O
JPQL	B-Language
or	O
SQL	B-Language
,	O
and	O
comes	O
with	O
its	O
own	O
byte-code	O
enhancer	O
.	O
</s>
<s>
It	O
allows	O
persistence	B-Application
to	O
relational	O
datastores	O
(	O
RDBMS	O
)	O
,	O
object-based	O
datastores	O
(	O
db4o	B-Language
,	O
NeoDatis	O
ODB	O
)	O
,	O
document-based	O
storage	O
(	O
XML	B-Protocol
,	O
Excel	B-Application
,	O
OpenDocument	B-Application
spreadsheets	I-Application
)	O
,	O
web-based	O
storage	O
(	O
JSON	B-General_Concept
,	O
Google	B-General_Concept
Storage	I-General_Concept
,	O
Amazon	B-General_Concept
Simple	I-General_Concept
Storage	I-General_Concept
Service	I-General_Concept
)	O
,	O
map-based	O
datastores	O
(	O
HBase	B-Language
,	O
Google	O
's	O
Bigtable	B-Application
,	O
Apache	B-Application
Cassandra	I-Application
)	O
,	O
graph-based	O
datastores	O
(	O
Neo4j	B-Language
)	O
,	O
document	O
stores	O
(	O
MongoDB	B-Application
)	O
as	O
well	O
as	O
other	O
types	O
of	O
datastores	O
(	O
e.g.	O
</s>
<s>
LDAP	B-Protocol
)	O
.	O
</s>
<s>
Its	O
plugins	O
are	O
OSGi-compliant	O
so	O
can	O
be	O
used	O
equally	O
in	O
an	O
OSGi	B-Application
environment	O
.	O
</s>
<s>
DataNucleus	B-Application
Access	O
Platform	O
is	O
also	O
utilised	O
by	O
the	O
persistence	B-Application
layer	O
behind	O
Google	B-Application
App	I-Application
Engine	I-Application
for	O
Java	B-Language
,	O
and	O
VMForce	O
(	O
cloud	O
offering	O
from	O
Salesforce.com	B-Application
and	O
VMWare	O
)	O
.	O
</s>
