<s>
A	O
data	B-General_Concept
item	I-General_Concept
describes	O
an	O
atomic	O
state	O
of	O
a	O
particular	O
object	O
concerning	O
a	O
specific	O
property	O
at	O
a	O
certain	O
time	O
point	O
.	O
</s>
<s>
A	O
collection	O
of	O
data	B-General_Concept
items	I-General_Concept
for	O
the	O
same	O
object	O
at	O
the	O
same	O
time	O
forms	O
an	O
object	O
instance	O
(	O
or	O
table	O
row	O
)	O
.	O
</s>
<s>
Any	O
type	O
of	O
complex	O
information	O
can	O
be	O
broken	O
down	O
to	O
elementary	O
data	B-General_Concept
items	I-General_Concept
(	O
atomic	O
state	O
)	O
.	O
</s>
<s>
Data	B-General_Concept
items	I-General_Concept
are	O
identified	O
by	O
object	O
(	O
o	O
)	O
,	O
property	O
(	O
p	O
)	O
and	O
time	O
(	O
t	O
)	O
,	O
while	O
the	O
value	O
(	O
v	O
)	O
is	O
a	O
function	O
of	O
o	O
,	O
p	O
and	O
t	O
:	O
v	O
=	O
F(o,p,t )	O
.	O
</s>
