<s>
Given	O
that	O
metadata	O
is	O
a	O
set	O
of	O
descriptive	O
,	O
structural	O
and	O
administrative	O
data	O
about	O
a	O
group	O
of	O
computer	O
data	O
(	O
for	O
example	O
such	O
as	O
a	O
database	B-Application
schema	I-Application
)	O
,	O
Java	B-Language
Metadata	I-Language
Interface	I-Language
(	O
or	O
JMI	B-Language
)	O
is	O
a	O
platform-neutral	O
specification	O
that	O
defines	O
the	O
creation	O
,	O
storage	O
,	O
access	O
,	O
lookup	O
and	O
exchange	O
of	O
metadata	O
in	O
the	O
Java	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
The	O
JMI	B-Language
specification	O
was	O
developed	O
under	O
the	O
Java	B-Language
Community	I-Language
Process	I-Language
and	O
is	O
defined	O
by	O
JSR	B-Language
40	I-Language
(	O
a	O
JSR	B-Language
is	O
the	O
formal	O
document	O
that	O
describe	O
proposed	O
specifications	O
and	O
technologies	O
for	O
adding	O
to	O
the	O
Java	B-Device
platform	I-Device
)	O
.	O
</s>
<s>
JMI	B-Language
is	O
based	O
on	O
the	O
Meta-Object	B-Application
Facility	I-Application
(	O
or	O
MOF	O
)	O
specification	O
from	O
the	O
Object	B-Architecture
Management	I-Architecture
Group	I-Architecture
(	O
or	O
OMG	O
)	O
.	O
</s>
<s>
The	O
MOF	O
is	O
a	O
metamodel	O
(	O
a	O
model	B-Application
of	O
any	O
kind	O
of	O
metadata	O
)	O
used	O
notably	O
to	O
define	O
the	O
Unified	B-Language
Modeling	I-Language
Language	I-Language
(	O
or	O
UML	B-Language
)	O
.	O
</s>
<s>
It	O
supports	O
the	O
exchange	O
of	O
metadata	O
through	O
XMI	B-Language
.	O
</s>
<s>
XMI	B-Language
is	O
a	O
standard	O
for	O
exchanging	O
metadata	O
information	O
via	O
Extensible	B-Protocol
Markup	I-Protocol
Language	I-Protocol
(	O
or	O
XML	B-Protocol
)	O
.	O
</s>
<s>
The	O
MOF/XMI	O
specifications	O
are	O
used	O
for	O
the	O
exchange	O
of	O
UML	B-Language
models	O
.	O
</s>
<s>
Essentially	O
,	O
JMI	B-Language
can	O
be	O
used	O
to	O
write	O
tools	O
in	O
Java	B-Device
for	O
manipulating	O
UML	B-Language
models	O
,	O
which	O
can	O
be	O
used	O
in	O
Model	B-Architecture
Driven	I-Architecture
Architecture	I-Architecture
and/or	O
Model	B-Language
Driven	I-Language
Development	I-Language
.	O
</s>
<s>
There	O
are	O
many	O
implementations	O
of	O
JMI	B-Language
,	O
including	O
the	O
Reference	O
Implementation	O
from	O
Unisys	O
,	O
SAP	B-Application
NetWeaver	I-Application
and	O
Sun	O
Microsystems	O
's	O
open-source	O
implementation	O
from	O
the	O
NetBeans	B-Application
group	O
.	O
</s>
<s>
JMI	B-Language
is	O
compatible	O
with	O
Java	B-Language
SE	I-Language
1.3	O
and	O
above	O
through	O
:	O
</s>
<s>
Standardized	O
mappings	O
from	O
the	O
MOF	O
modeling	O
constructs	O
to	O
Java	B-Device
;	O
</s>
