<s>
XDB	B-Application
Enterprise	I-Application
Server	I-Application
is	O
a	O
relational	O
database	B-Application
management	I-Application
system	I-Application
(	O
DBMS	O
)	O
,	O
which	O
was	O
available	O
for	O
DOS	B-Device
,	O
Windows	B-Device
NT	I-Device
and	O
OS/2	B-Application
,	O
and	O
was	O
compatible	O
with	O
IBM	B-Application
's	I-Application
DB2	I-Application
database	O
.	O
</s>
<s>
DOS	B-Device
version	O
was	O
released	O
in	O
1988	O
as	O
one	O
of	O
the	O
earliest	O
DOS-based	O
SQL	O
database	O
servers	O
.	O
</s>
<s>
It	O
is	O
still	O
shipped	O
with	O
Micro	O
Focus	O
 '	O
COBOL	B-Application
software	O
.	O
</s>
