<s>
ObjectStore	B-Device
is	O
a	O
commercial	O
object	B-Application
database	I-Application
,	O
a	O
specialized	O
type	O
of	O
NoSQL	B-General_Concept
database	O
designed	O
to	O
handle	O
data	O
created	O
by	O
applications	O
that	O
use	O
object-oriented	B-Language
programming	I-Language
techniques	O
,	O
avoiding	O
the	O
Object	O
to	O
Relational	O
Mapping	O
overhead	O
required	O
when	O
using	O
object-oriented	B-Language
data	O
with	O
a	O
Relational	B-Application
Database	I-Application
.	O
</s>
<s>
ObjectStore	B-Device
is	O
innovative	O
in	O
its	O
use	O
of	O
the	O
C++	B-Language
language	I-Language
to	O
make	O
database	O
access	O
transparent	O
.	O
</s>
<s>
In	O
this	O
way	O
,	O
one	O
can	O
create	O
new	O
C++	B-Language
objects	O
directly	O
in	O
the	O
database	O
yet	O
these	O
persistent	O
objects	O
look	O
and	O
behave	O
just	O
like	O
normal	O
C++	B-Language
objects	O
.	O
</s>
<s>
When	O
data	O
is	O
referenced	O
in	O
a	O
different	O
page	O
,	O
by	O
making	O
use	O
of	O
signals	O
,	O
ObjectStore	B-Device
traps	O
the	O
pointer	O
exception	O
and	O
transparently	O
brings	O
objects	O
in	O
from	O
the	O
database	O
by	O
bringing	O
in	O
the	O
required	O
page(s )	O
.	O
</s>
<s>
In	O
addition	O
,	O
by	O
use	O
of	O
a	O
technique	O
called	O
swizzling	B-General_Concept
,	O
the	O
database	O
can	O
be	O
accessed	O
from	O
different	O
platforms	O
,	O
with	O
pages	O
being	O
'	O
swizzled	O
 '	O
as	O
they	O
are	O
brought	O
into	O
memory	O
on	O
page	O
faults	O
to	O
correct	O
big	O
endian	O
versus	O
little	O
endian	O
platform	O
issues	O
as	O
well	O
as	O
virtual	B-Language
function	I-Language
table	I-Language
layout	O
.	O
</s>
<s>
The	O
design	O
of	O
ObjectStore	B-Device
is	O
described	O
in	O
a	O
1991	O
paper	O
in	O
the	O
Communications	O
of	O
the	O
ACM	O
.	O
</s>
<s>
ObjectStore	B-Device
was	O
originally	O
created	O
in	O
1988	O
by	O
Object	O
Design	O
,	O
Incorporated	O
,	O
which	O
was	O
based	O
in	O
Burlington	O
,	O
Massachusetts	O
and	O
founded	O
by	O
several	O
former	O
Symbolics	O
employees	O
,	O
including	O
Daniel	O
Weinreb	O
.	O
</s>
<s>
In	O
2002	O
the	O
product	O
was	O
acquired	O
by	O
Progress	O
Software	O
,	O
which	O
continued	O
to	O
develop	O
the	O
technology	O
,	O
expanding	O
its	O
use	O
beyond	O
the	O
object	B-Application
database	I-Application
market	O
to	O
target	O
uses	O
as	O
a	O
database	O
for	O
real-time	B-General_Concept
computing	I-General_Concept
,	O
specifically	O
designed	O
for	O
RFID	B-Application
data	O
management	O
,	O
and	O
as	O
a	O
cache	B-General_Concept
for	O
relational	B-Application
databases	I-Application
.	O
</s>
<s>
As	O
part	O
of	O
the	O
deal	O
the	O
ObjectStore	B-Device
product	O
line	O
moved	O
to	O
a	O
separate	O
operating	O
subsidiary	O
of	O
ESW	O
Capital	O
.	O
</s>
<s>
The	O
ObjectStore	B-Device
product	O
is	O
used	O
in	O
many	O
fields	O
,	O
including	O
telecommunications	O
,	O
financial	O
services	O
,	O
travel	O
,	O
GIS	O
,	O
and	O
the	O
government	O
.	O
</s>
