<s>
A	O
no-force	B-General_Concept
policy	O
is	O
used	O
in	O
transaction	B-General_Concept
control	O
in	O
database	B-General_Concept
theory	I-General_Concept
.	O
</s>
<s>
The	O
term	O
no-force	B-General_Concept
refers	O
to	O
the	O
disk	O
pages	O
related	O
to	O
the	O
actual	O
database	O
object	O
being	O
modified	O
.	O
</s>
<s>
With	O
a	O
no-force	B-General_Concept
policy	O
,	O
when	O
a	O
transaction	B-General_Concept
commits	O
,	O
the	O
changes	O
made	O
to	O
the	O
actual	O
objects	O
are	O
not	O
"	O
forced	O
"	O
,	O
that	O
is	O
,	O
required	O
to	O
be	O
written	O
to	O
disk	O
in-place	O
.	O
</s>
<s>
A	O
record	O
of	O
the	O
changes	O
must	O
still	O
be	O
preserved	O
at	O
commit	O
time	O
to	O
ensure	O
that	O
the	O
transaction	B-General_Concept
is	O
durable	B-General_Concept
.	O
</s>
<s>
This	O
record	O
is	O
typically	O
written	O
to	O
a	O
sequential	O
transaction	B-General_Concept
log	I-General_Concept
,	O
so	O
that	O
the	O
actual	O
changes	O
to	O
the	O
database	O
objects	O
as	O
recorded	O
on	O
disk	O
can	O
be	O
written	O
at	O
a	O
later	O
time	O
.	O
</s>
<s>
For	O
frequently	O
changed	O
objects	O
,	O
a	O
no-force	B-General_Concept
policy	O
allows	O
updates	O
to	O
be	O
merged	O
and	O
so	O
reduces	O
the	O
number	O
of	O
write	O
operations	O
to	O
the	O
on-disk	O
database	O
object	O
.	O
</s>
<s>
A	O
no-force	B-General_Concept
policy	O
also	O
reduces	O
the	O
seek	O
time	O
required	O
for	O
a	O
commit	O
by	O
having	O
mostly	O
sequential	O
write	O
operations	O
to	O
the	O
transaction	B-General_Concept
log	I-General_Concept
,	O
rather	O
than	O
requiring	O
the	O
disk	O
to	O
seek	O
to	O
many	O
distinct	O
database	O
objects	O
during	O
a	O
commit	O
.	O
</s>
