<s>
4+1	B-Architecture
is	O
a	O
view	B-Architecture
model	I-Architecture
used	O
for	O
"	O
describing	O
the	O
architecture	O
of	O
software-intensive	O
systems	O
,	O
based	O
on	O
the	O
use	O
of	O
multiple	O
,	O
concurrent	O
views	O
"	O
.	O
</s>
<s>
In	O
addition	O
,	O
selected	O
use	B-Architecture
cases	I-Architecture
or	O
scenarios	O
are	O
used	O
to	O
illustrate	O
the	O
architecture	O
serving	O
as	O
the	O
'	O
plus	O
one	O
 '	O
view	O
.	O
</s>
<s>
Hence	O
,	O
the	O
model	O
contains	O
4+1	B-Architecture
views	O
:	O
</s>
<s>
UML	B-Language
diagrams	I-Language
are	O
used	O
to	O
represent	O
the	O
logical	O
view	O
,	O
and	O
include	O
class	O
diagrams	O
,	O
and	O
state	B-Application
diagrams	I-Application
.	O
</s>
<s>
UML	B-Language
diagrams	I-Language
to	O
represent	O
process	O
view	O
include	O
the	O
sequence	O
diagram	O
,	O
communication	O
diagram	O
,	O
activity	O
diagram	O
.	O
</s>
<s>
UML	B-Language
Diagrams	I-Language
used	O
to	O
represent	O
the	O
development	O
view	O
include	O
the	O
Package	O
diagram	O
and	O
the	O
Component	B-Library
diagram	I-Library
.	O
</s>
<s>
UML	B-Language
diagrams	I-Language
used	O
to	O
represent	O
the	O
physical	O
view	O
include	O
the	O
deployment	B-Language
diagram	I-Language
.	O
</s>
<s>
Scenarios	O
:	O
The	O
description	O
of	O
an	O
architecture	O
is	O
illustrated	O
using	O
a	O
small	O
set	O
of	O
use	B-Architecture
cases	I-Architecture
,	O
or	O
scenarios	O
,	O
which	O
become	O
a	O
fifth	O
view	O
.	O
</s>
<s>
This	O
view	O
is	O
also	O
known	O
as	O
the	O
use	B-Architecture
case	I-Architecture
view	O
.	O
</s>
<s>
The	O
4+1	B-Architecture
view	I-Architecture
model	I-Architecture
is	O
generic	O
and	O
is	O
not	O
restricted	O
to	O
any	O
notation	O
,	O
tool	O
or	O
design	O
method	O
.	O
</s>
