<s>
nHydrate	B-Application
is	O
an	O
object-relational	B-General_Concept
mapping	I-General_Concept
(	O
ORM	O
)	O
solution	O
for	O
the	O
Microsoft	O
.NET	B-Application
platform	I-Application
providing	O
a	O
framework	O
for	O
a	O
relational	B-Application
database	I-Application
to	O
be	O
mapped	O
to	O
.NET	B-Application
objects	O
.	O
</s>
<s>
nHydrate	B-Application
is	O
free	O
as	O
an	O
open	B-License
source	I-License
project	O
on	O
GitHub.com	O
under	O
the	B-License
MIT	I-License
License	I-License
.	O
</s>
<s>
nHydrate	B-Application
was	O
originally	O
created	O
in	O
2003	O
as	O
a	O
private	O
project	O
to	O
solve	O
the	O
issues	O
with	O
the	O
.NET	B-Application
Framework	I-Application
1.1	O
.	O
</s>
<s>
Using	O
ADO.Net	O
Datasets	O
is	O
cumbersome	O
and	O
error	O
prone	O
,	O
so	O
a	O
small	O
generated	O
framework	O
was	O
created	O
to	O
relieve	O
developers	O
of	O
the	O
CRUD	B-General_Concept
work	O
.	O
</s>
<s>
As	O
a	O
private	O
project	O
it	O
was	O
later	O
inspired	O
by	O
the	O
work	O
of	O
the	O
NHibernate	B-Language
group	O
.	O
</s>
<s>
nHydrate	B-Application
was	O
a	O
private	O
project	O
from	O
2003	O
until	O
2009	O
.	O
</s>
<s>
nHydrate	B-Application
is	O
built	O
on	O
the	O
.NET	B-Application
Framework	I-Application
4.0	O
.	O
</s>
<s>
From	O
version	O
5.0	O
and	O
above	O
,	O
the	O
entire	O
framework	O
has	O
been	O
reworked	O
to	O
use	O
only	O
Entity	B-Application
Framework	I-Application
as	O
it	O
internal	O
data	O
access	O
layer	O
.	O
</s>
<s>
All	O
code	O
interactions	O
are	O
simply	O
Entity	B-Application
Framework	I-Application
now	O
so	O
there	O
is	O
no	O
learning	O
curve	O
for	O
developers	O
when	O
using	O
the	O
generated	O
output	O
.	O
</s>
<s>
nHydrate	B-Application
's	O
primary	O
feature	O
is	O
mapping	O
.NET	B-Application
objects	O
to	O
an	O
SQL	B-Language
server	O
database	O
.	O
</s>
<s>
The	O
CRUD	B-General_Concept
layer	O
(	O
create	O
,	O
update	O
,	O
delete	O
)	O
is	O
also	O
implemented	O
.	O
</s>
<s>
nHydrate	B-Application
generates	O
the	O
SQL	B-Language
for	O
all	O
CRUD	B-General_Concept
operations	O
as	O
well	O
as	O
advanced	O
LINQ	B-Language
capabilities	O
.	O
</s>
<s>
The	O
framework	O
is	O
designed	O
to	O
work	O
exclusively	O
with	O
Microsoft	O
SQL	B-Language
Server	O
.	O
</s>
<s>
The	O
tool	O
is	O
entirely	O
sited	O
within	O
Visual	B-Application
Studio.NET	I-Application
and	O
all	O
model	O
maintenance	O
and	O
generation	O
is	O
handled	O
directly	O
from	O
the	O
environment	O
.	O
</s>
<s>
There	O
are	O
no	O
XML	B-Protocol
files	O
or	O
other	O
complex	O
configuration	O
scenarios	O
to	O
navigate	O
like	O
almost	O
all	O
other	O
ORM	O
tools	O
.	O
</s>
<s>
The	O
VS.NET	B-Application
plugin	O
GUI	O
editor	O
provides	O
an	O
interface	O
to	O
interact	O
with	O
a	O
visual	O
model	O
and	O
edit	O
a	O
model	O
.	O
</s>
<s>
nHydrate	B-Application
was	O
started	O
by	O
Michael	O
Knight	O
,	O
and	O
later	O
added	O
Chris	O
Davis	O
.	O
</s>
<s>
By	O
2006	O
,	O
the	O
platform	O
had	O
much	O
of	O
its	O
current	O
functionality	O
,	O
minus	O
LINQ	B-Language
,	O
and	O
was	O
being	O
used	O
in	O
applications	O
in	O
the	O
Atlanta	O
area	O
.	O
</s>
<s>
By	O
2009	O
,	O
the	O
advanced	O
functionality	O
had	O
been	O
added	O
like	O
inheritance	O
,	O
LINQ	B-Language
,	O
and	O
VS.NET	B-Application
integration	O
.	O
</s>
