<s>
Point-in-time	B-General_Concept
recovery	I-General_Concept
(	O
PITR	B-General_Concept
)	O
in	O
the	O
context	O
of	O
computers	O
involves	O
systems	O
,	O
often	O
databases	B-Application
,	O
whereby	O
an	O
administrator	O
can	O
restore	O
or	O
recover	O
a	O
set	O
of	O
data	O
or	O
a	O
particular	O
setting	O
from	O
a	O
time	O
in	O
the	O
past	O
.	O
</s>
<s>
Note	O
for	O
example	O
Windows	B-Application
XP	I-Application
's	O
capability	O
to	O
restore	O
operating-system	O
settings	O
from	O
a	O
past	O
date	O
(	O
for	O
instance	O
,	O
before	O
data	O
corruption	O
occurred	O
)	O
.	O
</s>
<s>
Time	B-Operating_System
Machine	I-Operating_System
for	O
Mac	O
OS	O
X	O
provides	O
another	O
example	O
of	O
point-in-time	B-General_Concept
recovery	I-General_Concept
.	O
</s>
<s>
Once	O
PITR	B-General_Concept
logging	O
starts	O
for	O
a	O
PITR-capable	O
database	O
,	O
a	O
database	B-General_Concept
administrator	I-General_Concept
can	O
restore	O
that	O
database	O
from	O
backups	B-Protocol
to	O
the	O
state	O
that	O
it	O
had	O
at	O
any	O
time	O
since	O
.	O
</s>
