<s>
In	O
computerized	B-General_Concept
business	I-General_Concept
management	I-General_Concept
,	O
single	B-Application
version	I-Application
of	I-Application
the	I-Application
truth	I-Application
(	O
SVOT	B-Application
)	O
,	O
is	O
a	O
technical	O
concept	O
describing	O
the	O
data	O
warehousing	O
ideal	O
of	O
having	O
either	O
a	O
single	O
centralised	O
database	O
,	O
or	O
at	O
least	O
a	O
distributed	O
synchronised	O
database	O
,	O
which	O
stores	O
all	O
of	O
an	O
organisation	O
's	O
data	O
in	O
a	O
consistent	O
and	O
non-redundant	B-Application
form	O
.	O
</s>
<s>
This	O
contrasts	O
with	O
the	O
related	O
concept	O
of	O
single	B-Application
source	I-Application
of	I-Application
truth	I-Application
(	O
SSOT	O
)	O
,	O
which	O
refers	O
to	O
a	O
data	O
storage	O
principle	O
to	O
always	O
source	O
a	O
particular	O
piece	O
of	O
information	O
from	O
one	O
place	O
.	O
</s>
<s>
In	O
some	O
systems	O
and	O
in	O
the	O
context	O
of	O
message	O
processing	O
systems	O
(	O
often	O
real-time	B-General_Concept
systems	I-General_Concept
)	O
,	O
this	O
term	O
also	O
refers	O
to	O
the	O
goal	O
of	O
establishing	O
a	O
single	O
agreed	O
sequence	O
of	O
messages	O
within	O
a	O
database	O
formed	O
by	O
a	O
particular	O
but	O
arbitrary	O
sequencing	O
of	O
records	O
.	O
</s>
<s>
The	O
key	O
concept	O
is	O
that	O
data	O
combined	O
in	O
a	O
certain	O
sequence	O
is	O
a	O
"	O
truth	O
"	O
which	O
may	O
be	O
analyzed	O
and	O
processed	O
giving	O
particular	O
results	O
,	O
and	O
that	O
although	O
the	O
sequence	O
is	O
arbitrary	O
(	O
and	O
thus	O
another	O
correct	O
but	O
equally	O
arbitrary	O
sequencing	O
would	O
ultimately	O
provide	O
different	O
results	O
in	O
any	O
analysis	O
)	O
,	O
it	O
is	O
desirable	O
to	O
agree	O
that	O
the	O
sequence	O
enshrined	O
in	O
the	O
"	O
single	B-Application
version	I-Application
of	I-Application
the	I-Application
truth	I-Application
"	O
is	O
the	O
version	O
that	O
will	O
be	O
considered	O
"	O
the	O
truth	O
"	O
,	O
and	O
that	O
any	O
conclusions	O
drawn	O
from	O
analysis	O
of	O
the	O
database	O
are	O
valid	O
and	O
unarguable	O
,	O
and	O
(	O
in	O
a	O
technical	O
context	O
)	O
the	O
database	O
may	O
be	O
duplicated	O
to	O
a	O
backup	O
environment	O
to	O
ensure	O
a	O
persistent	O
record	O
is	O
kept	O
of	O
the	O
"	O
single	B-Application
version	I-Application
of	I-Application
the	I-Application
truth	I-Application
"	O
.	O
</s>
<s>
The	O
key	O
point	O
is	O
when	O
the	O
database	O
is	O
created	O
using	O
an	O
external	O
data	O
source	O
(	O
such	O
as	O
a	O
sequence	O
of	O
trading	O
messages	O
from	O
a	O
stock	O
exchange	O
)	O
an	O
arbitrary	O
selection	O
is	O
made	O
of	O
one	O
possibility	O
from	O
two	O
or	O
more	O
equally	O
valid	O
representations	O
of	O
the	O
input	B-General_Concept
data	I-General_Concept
,	O
but	O
henceforth	O
the	O
decision	O
sets	O
"	O
in	O
stone	O
"	O
one	O
and	O
only	O
one	B-Application
version	I-Application
of	I-Application
the	I-Application
truth	I-Application
.	O
</s>
<s>
Critics	O
of	O
SVOT	B-Application
as	O
applied	O
to	O
message	O
sequencing	O
argue	O
that	O
this	O
concept	O
is	O
not	O
scalable	O
.	O
</s>
<s>
But	O
as	O
pointed	O
out	O
by	O
Owen	O
Rubel	O
at	O
his	O
API	B-General_Concept
World	O
talk	O
'	O
The	O
New	O
API	B-General_Concept
Pattern	O
 '	O
,	O
the	O
SVOT	B-Application
is	O
always	O
going	O
to	O
be	O
the	O
service	O
layer	O
in	O
a	O
distributed	O
architecture	O
where	O
input/output	B-General_Concept
(	O
I/O	B-General_Concept
)	O
meet	O
;	O
this	O
also	O
is	O
where	O
the	O
endpoint	O
binding	O
belongs	O
to	O
allow	O
for	O
modularization	O
and	O
better	O
abstraction	O
of	O
the	O
I/O	B-General_Concept
data	O
across	O
the	O
architecture	O
to	O
avoid	O
the	O
architectural	O
cross	B-Application
cutting	I-Application
concern	I-Application
.	O
</s>
