<s>
In	O
computer	B-General_Concept
science	I-General_Concept
,	O
in	O
an	O
object-oriented	B-Language
program	I-Language
,	O
groups	O
of	O
objects	O
form	O
a	O
network	O
through	O
their	O
relationships	O
with	O
each	O
other	O
,	O
either	O
through	O
a	O
direct	O
reference	O
to	O
another	O
object	O
or	O
through	O
a	O
chain	O
of	O
intermediate	O
references	O
.	O
</s>
<s>
These	O
groups	O
of	O
objects	O
are	O
referred	O
to	O
as	O
object	B-Application
graphs	I-Application
,	O
after	O
the	O
mathematical	O
objects	O
called	O
graphs	O
studied	O
in	O
graph	O
theory	O
.	O
</s>
<s>
An	O
object	B-Application
graph	I-Application
is	O
a	O
view	O
of	O
an	O
object	B-Language
system	I-Language
at	O
a	O
particular	O
point	O
in	O
time	O
.	O
</s>
<s>
Unlike	O
a	O
normal	O
data	B-Application
model	I-Application
such	O
as	O
a	O
Unified	B-Language
Modeling	I-Language
Language	I-Language
(	O
UML	B-Language
)	O
class	O
diagram	O
,	O
which	O
details	O
the	O
relationships	O
between	O
classes	O
,	O
the	O
object	B-Application
graph	I-Application
relates	O
their	O
instances	O
.	O
</s>
<s>
Object	O
diagrams	O
are	O
subsets	O
of	O
the	O
overall	O
object	B-Application
graph	I-Application
.	O
</s>
<s>
Object-oriented	B-Language
applications	O
contain	O
complex	O
webs	O
of	O
interrelated	O
objects	O
.	O
</s>
<s>
This	O
web	O
of	O
objects	O
is	O
called	O
an	O
object	B-Application
graph	I-Application
and	O
it	O
is	O
the	O
more	O
abstract	O
structure	O
that	O
can	O
be	O
used	O
in	O
discussing	O
an	O
application	O
's	O
state	O
.	O
</s>
<s>
An	O
object	B-Application
graph	I-Application
is	O
a	O
directed	O
graph	O
,	O
which	O
might	O
be	O
cyclic	O
.	O
</s>
<s>
When	O
stored	O
in	O
RAM	B-Architecture
,	O
objects	O
occupy	O
different	O
segments	O
of	O
the	O
memory	O
with	O
their	O
attributes	O
and	O
function	O
table	O
,	O
while	O
relationships	O
are	O
represented	O
by	O
pointers	O
or	O
a	O
different	O
type	O
of	O
global	O
handler	O
in	O
higher-level	O
languages	O
.	O
</s>
<s>
In	O
the	O
object	B-Application
graph	I-Application
a	O
Car	O
instance	O
will	O
have	O
up	O
to	O
four	O
links	O
to	O
its	O
wheels	O
,	O
which	O
can	O
be	O
named	O
frontLeft	O
,	O
frontRight	O
,	O
backLeft	O
and	O
backRight	O
.	O
</s>
<s>
An	O
example	O
of	O
an	O
adjacency	B-Data_Structure
list	I-Data_Structure
representation	O
might	O
be	O
something	O
as	O
follows	O
:	O
</s>
