<s>
The	O
SQL/MED	B-Language
(	O
"	O
Management	O
of	O
External	O
Data	O
"	O
)	O
extension	O
to	O
the	O
SQL	B-Language
standard	O
is	O
defined	O
by	O
ISO/IEC	O
9075-9:2008	O
(	O
originally	O
defined	O
for	O
SQL:2003	B-Language
)	O
.	O
</s>
<s>
SQL/MED	B-Language
provides	O
extensions	O
to	O
SQL	B-Language
that	O
define	O
foreign-data	O
wrappers	O
and	O
datalink	O
types	O
to	O
allow	O
SQL	B-Language
to	O
manage	O
external	O
data	O
.	O
</s>
<s>
External	O
data	O
is	O
data	O
that	O
is	O
accessible	O
to	O
,	O
but	O
not	O
managed	O
by	O
,	O
an	O
SQL-based	O
DBMS	B-General_Concept
.	O
</s>
<s>
This	O
standard	O
can	O
be	O
used	O
in	O
the	O
development	O
of	O
federated	B-General_Concept
database	I-General_Concept
systems	I-General_Concept
.	O
</s>
<s>
PostgreSQL	B-Application
has	O
support	O
for	O
some	O
SQL/MED	B-Language
since	O
version	O
9.1	O
.	O
</s>
<s>
LucidDB	B-Application
has	O
support	O
for	O
SQL/MED	B-Language
.	O
</s>
<s>
MariaDB	B-Application
has	O
support	O
for	O
SQL/MED	B-Language
with	O
the	O
CONNECT	O
storage	O
engine	O
.	O
</s>
<s>
Farrago	O
has	O
support	O
for	O
SQL/MED	B-Language
.	O
</s>
<s>
IBM	B-Application
Db2	I-Application
has	O
support	O
for	O
SQL/MED	B-Language
.	O
</s>
<s>
Teiid	O
has	O
support	O
for	O
SQL/MED	B-Language
.	O
</s>
