<s>
Decomposition	B-Algorithm
in	O
computer	B-General_Concept
science	I-General_Concept
,	O
also	O
known	O
as	O
factoring	B-Algorithm
,	O
is	O
breaking	O
a	O
complex	O
problem	O
or	O
system	O
into	O
parts	O
that	O
are	O
easier	O
to	O
conceive	O
,	O
understand	O
,	O
program	O
,	O
and	O
maintain	O
.	O
</s>
<s>
There	O
are	O
different	O
types	O
of	O
decomposition	B-Algorithm
defined	O
in	O
computer	B-General_Concept
sciences	I-General_Concept
:	O
</s>
<s>
In	O
structured	B-Language
programming	I-Language
,	O
algorithmic	B-Algorithm
decomposition	I-Algorithm
breaks	O
a	O
process	O
down	O
into	O
well-defined	O
steps	O
.	O
</s>
<s>
Object-oriented	B-Language
decomposition	B-Algorithm
,	O
on	O
the	O
other	O
hand	O
,	O
breaks	O
a	O
large	O
system	O
down	O
into	O
progressively	O
smaller	O
classes	O
or	O
objects	O
that	O
are	O
responsible	O
for	O
some	O
part	O
of	O
the	O
problem	O
domain	O
.	O
</s>
<s>
According	O
to	O
Booch	O
,	O
algorithmic	B-Algorithm
decomposition	I-Algorithm
is	O
a	O
necessary	O
part	O
of	O
object-oriented	B-Language
analysis	O
and	O
design	O
,	O
but	O
object-oriented	B-Language
systems	O
start	O
with	O
and	O
emphasize	O
decomposition	B-Algorithm
into	O
objects.Grady	O
Booch	O
(	O
1994	O
)	O
.	O
</s>
<s>
Object-oriented	B-Language
Analysis	O
and	O
Design	O
(	O
2nd	O
ed	O
.	O
)	O
.	O
</s>
<s>
More	O
generally	O
,	O
functional	B-Algorithm
decomposition	I-Algorithm
in	O
computer	B-General_Concept
science	I-General_Concept
is	O
a	O
technique	O
for	O
mastering	O
the	O
complexity	O
of	O
the	O
function	O
of	O
a	O
model	O
.	O
</s>
<s>
A	O
decomposition	B-Algorithm
paradigm	O
in	O
computer	O
programming	O
is	O
a	O
strategy	O
for	O
organizing	O
a	O
program	O
as	O
a	O
number	O
of	O
parts	O
,	O
and	O
it	O
usually	O
implies	O
a	O
specific	O
way	O
to	O
organize	O
a	O
program	O
text	O
.	O
</s>
<s>
Usually	O
the	O
aim	O
of	O
using	O
a	O
decomposition	B-Algorithm
paradigm	I-Algorithm
is	O
to	O
optimize	O
some	O
metric	O
related	O
to	O
program	O
complexity	O
,	O
for	O
example	O
the	O
modularity	O
of	O
the	O
program	O
or	O
its	O
maintainability	O
.	O
</s>
<s>
Most	O
decomposition	B-Algorithm
paradigms	I-Algorithm
suggest	O
breaking	O
down	O
a	O
program	O
into	O
parts	O
so	O
as	O
to	O
minimize	O
the	O
static	O
dependencies	O
among	O
those	O
parts	O
,	O
and	O
to	O
maximize	O
the	O
cohesiveness	O
of	O
each	O
part	O
.	O
</s>
<s>
Some	O
popular	O
decomposition	B-Algorithm
paradigms	I-Algorithm
are	O
the	O
procedural	O
,	O
modules	O
,	O
abstract	O
data	O
type	O
and	O
object	B-Language
oriented	I-Language
ones	O
.	O
</s>
<s>
The	O
concept	O
of	O
decomposition	B-Algorithm
paradigm	I-Algorithm
is	O
entirely	O
independent	O
and	O
different	O
from	O
that	O
of	O
model	O
of	O
computation	O
,	O
but	O
the	O
two	O
are	O
often	O
confused	O
,	O
most	O
often	O
in	O
the	O
cases	O
of	O
the	O
functional	O
model	O
of	O
computation	O
being	O
confused	O
with	O
procedural	O
decomposition	B-Algorithm
,	O
and	O
of	O
the	O
actor	B-Application
model	I-Application
of	O
computation	O
being	O
confused	O
with	O
object	B-Language
oriented	I-Language
decomposition	B-Algorithm
.	O
</s>
<s>
A	O
decomposition	B-Algorithm
diagram	O
shows	O
a	O
complex	O
,	O
process	O
,	O
organization	O
,	O
data	O
subject	O
area	O
,	O
or	O
other	O
type	O
of	O
object	O
broken	O
down	O
into	O
lower	O
level	O
,	O
more	O
detailed	O
components	O
.	O
</s>
<s>
For	O
example	O
,	O
decomposition	B-Algorithm
diagrams	O
may	O
represent	O
organizational	O
structure	O
or	O
functional	B-Algorithm
decomposition	I-Algorithm
into	O
processes	O
.	O
</s>
<s>
Decomposition	B-Algorithm
diagrams	O
provide	O
a	O
logical	O
hierarchical	O
decomposition	B-Algorithm
of	O
a	O
system	O
.	O
</s>
