<s>
Dapper	O
is	O
an	O
object	B-General_Concept
–	I-General_Concept
relational	I-General_Concept
mapping	I-General_Concept
(	O
ORM	O
)	O
product	O
for	O
the	O
Microsoft	B-Application
.NET	I-Application
platform	O
:	O
it	O
provides	O
a	O
framework	B-Architecture
for	O
mapping	O
an	O
object-oriented	B-Language
domain	B-Application
model	I-Application
to	O
a	O
traditional	O
relational	B-Application
database	I-Application
.	O
</s>
<s>
Its	O
purpose	O
is	O
to	O
relieve	O
the	O
developer	O
from	O
a	O
significant	O
portion	O
of	O
relational	O
data	O
persistence-related	O
programming	O
tasks	O
.	O
</s>
<s>
Dapper	O
is	O
free	B-Application
as	O
open	B-Application
source	I-Application
software	I-Application
that	O
is	O
distributed	O
under	O
dual	O
license	O
,	O
either	O
the	O
Apache	B-Application
License	I-Application
2.0	I-Application
or	O
the	B-License
MIT	I-License
License	I-License
.	O
</s>
