<s>
A	O
profile	O
in	O
the	O
Unified	B-Language
Modeling	I-Language
Language	I-Language
(	O
UML	B-Language
)	O
provides	O
a	O
generic	O
extension	O
mechanism	O
for	O
customizing	O
UML	B-Language
models	O
for	O
particular	O
domains	O
and	O
platforms	O
.	O
</s>
<s>
Profiles	O
are	O
defined	O
using	O
stereotypes	B-Language
,	O
tag	O
definitions	O
,	O
and	O
constraints	O
which	O
are	O
applied	O
to	O
specific	O
model	O
elements	O
,	O
like	O
Classes	O
,	O
Attributes	O
,	O
Operations	O
,	O
and	O
Activities	O
.	O
</s>
<s>
A	O
Profile	O
is	O
a	O
collection	O
of	O
such	O
extensions	O
that	O
collectively	O
customize	O
UML	B-Language
for	O
a	O
particular	O
domain	B-Application
(	O
e.g.	O
,	O
aerospace	O
,	O
healthcare	O
,	O
financial	O
)	O
or	O
platform	O
(	O
J2EE	O
,	O
.NET	O
)	O
.	O
</s>
<s>
The	O
UML	B-Language
Profile	I-Language
for	O
XML	B-Protocol
is	O
defined	O
by	O
David	O
Carlson	O
in	O
the	O
book	O
"	O
Modeling	O
XML	B-Protocol
Applications	O
with	O
UML	B-Language
"	O
pp.310	O
and	O
describes	O
a	O
set	O
of	O
extensions	O
to	O
basic	O
UML	B-Language
model	O
elements	O
to	O
enable	O
accurate	O
modeling	O
of	O
XSD	O
schemas	O
.	O
</s>
<s>
SysML	B-Language
is	O
an	O
Object	B-Architecture
Management	I-Architecture
Group	I-Architecture
(	O
OMG	O
)	O
-standardized	O
profile	O
of	O
Unified	B-Language
Modeling	I-Language
Language	I-Language
which	O
is	O
used	O
for	O
system	O
engineering	O
applications	O
.	O
</s>
<s>
MARTE	B-Language
is	O
the	O
OMG	O
standard	O
for	O
modelling	O
real-time	O
and	O
embedded	O
applications	O
with	O
UML2	O
.	O
</s>
<s>
The	O
UML	B-Language
profile	I-Language
for	O
relationships	O
(	O
see	O
also	O
)	O
is	O
based	O
on	O
RM-ODP	O
and	O
provides	O
precise	O
specifications	O
of	O
the	O
semantics	O
of	O
UML	B-Language
concepts	O
used	O
to	O
specify	O
generic	O
(	O
not	O
necessarily	O
binary	O
)	O
relationships	O
such	O
as	O
composition	O
and	O
subtyping	O
.	O
</s>
