<s>
In	O
software	B-General_Concept
engineering	I-General_Concept
,	O
a	O
plain	B-Language
old	I-Language
CLR	I-Language
object	I-Language
,	O
or	O
plain	O
old	O
class	O
object	O
(	O
POCO	B-Language
)	O
is	O
a	O
simple	O
object	O
created	O
in	O
the	O
.NET	O
Common	O
Language	O
Runtime	O
(	O
CLR	O
)	O
that	O
is	O
unencumbered	O
by	O
inheritance	O
or	O
attributes	O
.	O
</s>
<s>
This	O
is	O
often	O
used	O
in	O
opposition	O
to	O
the	O
complex	O
or	O
specialized	O
objects	O
that	O
object-relational	B-General_Concept
mapping	I-General_Concept
frameworks	O
often	O
require	O
.	O
</s>
<s>
In	O
essence	O
,	O
a	O
POCO	B-Language
does	O
not	O
have	O
any	O
dependency	O
on	O
an	O
external	O
framework	O
.	O
</s>
<s>
Plain	B-Language
Old	I-Language
CLR	I-Language
Object	I-Language
is	O
a	O
play	O
on	O
the	O
term	O
plain	B-Language
old	I-Language
Java	I-Language
object	I-Language
from	O
the	O
Java	B-Language
EE	I-Language
programming	O
world	O
,	O
which	O
was	O
coined	O
by	O
Martin	O
Fowler	O
in	O
2000	O
.	O
</s>
<s>
POCO	B-Language
is	O
often	O
expanded	O
to	O
plain	O
old	O
C#	B-Application
object	O
,	O
though	O
POCOs	O
can	O
be	O
created	O
with	O
any	O
language	O
targeting	O
the	O
CLR	O
.	O
</s>
<s>
goes	O
hand-in-hand	O
with	O
dependency	B-Library
injection	I-Library
and	O
the	O
repository	O
pattern	O
;	O
</s>
