<s>
pureXML	B-Application
is	O
the	O
native	O
XML	B-Protocol
storage	O
feature	O
in	O
the	O
IBM	B-Application
Db2	I-Application
data	O
server	O
.	O
</s>
<s>
pureXML	B-Application
provides	O
query	B-Language
languages	I-Language
,	O
storage	O
technologies	O
,	O
indexing	O
technologies	O
,	O
and	O
other	O
features	O
to	O
support	O
XML	B-Protocol
data	O
.	O
</s>
<s>
The	O
word	O
pure	O
in	O
pureXML	B-Application
was	O
chosen	O
to	O
indicate	O
that	O
Db2	B-Application
natively	O
stores	O
and	O
natively	O
processes	O
XML	B-Protocol
data	O
in	O
its	O
inherent	O
hierarchical	O
structure	O
,	O
as	O
opposed	O
to	O
treating	O
XML	B-Protocol
data	O
as	O
plain	O
text	O
or	O
converting	O
it	O
into	O
a	O
relational	O
format	O
.	O
</s>
<s>
Db2	B-Application
includes	O
two	O
distinct	O
storage	O
mechanisms	O
:	O
one	O
for	O
efficiently	O
managing	O
traditional	O
SQL	O
data	O
types	O
,	O
and	O
another	O
for	O
managing	O
XML	B-Protocol
data	O
.	O
</s>
<s>
The	O
underlying	O
storage	O
mechanism	O
is	O
transparent	O
to	O
users	O
and	O
applications	O
;	O
they	O
simply	O
use	O
SQL	O
(	O
including	O
SQL	O
with	O
XML	B-Protocol
extensions	O
or	O
SQL/XML	B-Language
)	O
or	O
XQuery	B-Language
to	O
work	O
with	O
the	O
data	O
.	O
</s>
<s>
XML	B-Protocol
data	O
is	O
stored	O
in	O
columns	O
of	O
Db2	B-Application
tables	O
that	O
have	O
the	O
XML	B-Protocol
data	O
type	O
.	O
</s>
<s>
XML	B-Protocol
data	O
is	O
stored	O
in	O
a	O
parsed	O
format	O
that	O
reflects	O
the	O
hierarchical	O
nature	O
of	O
the	O
original	O
XML	B-Protocol
data	O
.	O
</s>
<s>
As	O
such	O
,	O
pureXML	B-Application
uses	O
trees	O
and	O
nodes	O
as	O
its	O
model	O
for	O
storing	O
and	O
processing	O
XML	B-Protocol
data	O
.	O
</s>
<s>
If	O
you	O
instruct	O
Db2	B-Application
to	O
validate	O
XML	B-Protocol
data	O
against	O
an	O
XML	B-Protocol
schema	O
prior	O
to	O
storage	O
,	O
Db2	B-Application
annotates	O
all	O
nodes	O
in	O
the	O
XML	B-Protocol
hierarchy	O
with	O
information	O
about	O
the	O
schema	O
types	O
;	O
otherwise	O
,	O
it	O
will	O
annotate	O
the	O
nodes	O
with	O
default	O
type	O
information	O
.	O
</s>
<s>
Upon	O
storage	O
,	O
Db2	B-Application
preserves	O
the	O
internal	O
structure	O
of	O
XML	B-Protocol
data	O
,	O
converting	O
its	O
tag	O
names	O
and	O
other	O
information	O
into	O
integer	O
values	O
.	O
</s>
<s>
Finally	O
,	O
Db2	B-Application
automatically	O
splits	O
XML	B-Protocol
nodes	O
across	O
multiple	O
database	O
pages	O
,	O
as	O
needed	O
.	O
</s>
<s>
XML	B-Protocol
schemas	O
specify	O
which	O
XML	B-Protocol
elements	O
are	O
valid	O
,	O
in	O
what	O
order	O
these	O
elements	O
should	O
appear	O
in	O
XML	B-Protocol
data	O
,	O
which	O
XML	B-Protocol
data	O
types	O
are	O
associated	O
with	O
each	O
element	O
,	O
and	O
so	O
on	O
.	O
</s>
<s>
pureXML	B-Application
allows	O
you	O
to	O
validate	O
the	O
cells	O
in	O
a	O
column	O
of	O
XML	B-Protocol
data	O
against	O
no	O
schema	O
,	O
one	O
schema	O
,	O
or	O
multiple	O
schemas	O
.	O
</s>
<s>
pureXML	B-Application
also	O
provides	O
tools	O
to	O
support	O
evolving	O
XML	B-Protocol
schemas	O
.	O
</s>
<s>
IBM	O
has	O
enhanced	O
its	O
programming	O
language	O
interfaces	O
to	O
support	O
access	O
to	O
its	O
XML	B-Protocol
data	O
.	O
</s>
<s>
These	O
enhancements	O
span	O
Java	B-Language
(	O
JDBC	B-Language
)	O
,	O
C	B-Language
(	O
embedded	O
SQL	O
and	O
call-level	O
interface	O
)	O
,	O
COBOL	B-Application
(	O
embedded	O
SQL	O
)	O
,	O
PHP	B-Application
,	O
and	O
Microsoft	B-Application
's	I-Application
.NET	I-Application
Framework	I-Application
(	O
through	O
the	O
DB2.NET	O
provider	O
)	O
.	O
</s>
<s>
pureXML	B-Application
was	O
first	O
included	O
in	O
the	O
DB2	B-Application
9	O
for	O
Linux	B-Application
,	O
Unix	B-Application
,	O
and	O
Microsoft	B-Application
Windows	I-Application
release	O
,	O
which	O
was	O
codenamed	O
Viper	O
,	O
in	O
June	O
2006	O
.	O
</s>
<s>
It	O
was	O
available	O
on	O
DB2	B-Application
9	O
for	O
z/OS	B-Application
in	O
March	O
2007	O
.	O
</s>
<s>
In	O
October	O
2007	O
,	O
IBM	O
released	O
DB2	B-Application
9.5	O
with	O
improved	O
XML	B-Protocol
data	O
transaction	O
performance	O
and	O
improved	O
storage	O
savings	O
.	O
</s>
<s>
In	O
June	O
2009	O
,	O
IBM	O
released	O
DB2	B-Application
9.7	O
with	O
XML	B-Protocol
supported	O
for	O
database-partitioned	O
,	O
range-partitioned	O
,	O
and	O
multi-dimensionally	O
clustered	O
tables	O
as	O
well	O
as	O
compression	O
of	O
XML	B-Protocol
data	O
and	O
indices	O
.	O
</s>
<s>
Db2	B-Application
is	O
a	O
hybrid	O
data	O
server	O
—	O
it	O
offers	O
data	O
management	O
for	O
traditional	O
relational	O
data	O
,	O
as	O
well	O
as	O
providing	O
native	O
XML	B-Protocol
data	O
management	O
.	O
</s>
<s>
Other	O
vendors	O
that	O
offer	O
data	O
management	O
for	O
both	O
relational	O
data	O
and	O
native	O
XML	B-Protocol
storage	O
include	O
Oracle	B-General_Concept
with	O
its	O
11g	B-General_Concept
product	O
and	O
Microsoft	O
with	O
its	O
SQL	B-Application
Server	I-Application
product	O
.	O
</s>
<s>
pureXML	B-Application
also	O
competes	O
with	O
native	O
XML	B-Application
databases	I-Application
like	O
BaseX	B-Language
,	O
eXist	O
,	O
MarkLogic	O
or	O
Sedna	B-Application
.	O
</s>
<s>
The	O
following	O
pureXML	B-Application
classroom	O
and	O
online	O
courses	O
are	O
available	O
from	O
IBM	O
Education	O
:	O
</s>
<s>
Managing	O
XML	B-Protocol
Data	O
in	O
DB2	B-Application
9	O
.	O
</s>
