<s>
Bitemporal	B-Application
modeling	I-Application
is	O
a	O
specific	O
case	O
of	O
temporal	O
database	O
information	B-Application
modeling	I-Application
technique	I-Application
designed	O
to	O
handle	O
historical	O
data	O
along	O
two	O
different	O
timelines	B-Application
.	O
</s>
<s>
Implementations	O
of	O
bitemporal	B-Application
modeling	I-Application
can	O
be	O
done	O
using	O
relational	B-Application
databases	I-Application
and	O
graph	B-Application
databases	I-Application
.	O
</s>
<s>
As	O
such	O
,	O
bitemporal	B-Application
modeling	I-Application
is	O
considered	O
different	O
from	O
dimensional	B-Application
modeling	I-Application
and	O
complementary	O
to	O
database	B-Application
normalization	I-Application
.	O
</s>
<s>
The	O
SQL:2011	B-Language
standard	O
provides	O
language	O
constructs	O
for	O
working	O
with	O
bitemporal	O
data	O
.	O
</s>
<s>
Bitemporal	B-Application
modeling	I-Application
uses	O
bitemporal	O
structures	O
as	O
the	O
basic	O
components	O
.	O
</s>
<s>
By	O
focusing	O
on	O
completeness	O
and	O
accuracy	O
of	O
data	O
,	O
bitemporal	B-Application
modeling	I-Application
facilitates	O
the	O
creation	O
of	O
complete	O
audit	O
trails	O
of	O
data	O
.	O
</s>
<s>
XTDB	O
(	O
formerly	O
Crux	O
)	O
is	O
an	O
open	O
source	O
database	O
that	O
indexes	O
documents	O
using	O
an	O
EAV	B-General_Concept
data	I-General_Concept
model	I-General_Concept
and	O
provides	O
point-in-time	O
bitemporal	O
SQL	O
&	O
Datalog	O
queries	O
.	O
</s>
