<s>
eXtremeDB	B-Application
is	O
a	O
high	O
performance	O
,	O
low-latency	O
,	O
ACID-compliant	O
embedded	B-Application
database	I-Application
management	O
system	O
using	O
an	O
in-memory	B-General_Concept
database	I-General_Concept
system	I-General_Concept
(	O
IMDS	B-General_Concept
)	O
architecture	O
and	O
designed	O
to	O
be	O
linked	O
into	O
C/C	O
++	O
based	O
programs	O
.	O
</s>
<s>
It	O
works	O
on	O
Windows	B-Application
,	O
Linux	B-Application
,	O
and	O
other	O
real-time	B-Operating_System
and	O
embedded	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
McObject	O
LLC	O
introduced	O
eXtremeDB	B-Application
in	O
2001	O
,	O
targeting	O
embedded	B-Architecture
systems	I-Architecture
running	O
in	O
resource-constrained	O
environments	O
(	O
i.e.	O
</s>
<s>
with	O
limited	O
random-access	B-Architecture
memory	I-Architecture
and	O
relatively	O
low-powered	O
central	B-General_Concept
processing	I-General_Concept
units	I-General_Concept
)	O
.	O
</s>
<s>
eXtremeDB	B-Application
characteristics	O
appealing	O
to	O
this	O
market	O
include	O
a	O
small	O
code	O
size	O
(	O
approximately	O
150	O
KB	O
)	O
,	O
native	O
C	B-Language
language	I-Language
application	B-Application
programming	I-Application
interface	I-Application
,	O
available	O
source	O
code	O
,	O
and	O
a	O
high	O
degree	O
of	O
portability	O
(	O
to	O
support	O
the	O
varied	O
processors	O
and	O
operating	B-General_Concept
systems	I-General_Concept
used	O
in	O
embedded	B-Architecture
systems	I-Architecture
)	O
.	O
</s>
<s>
Early	O
deployments	O
by	O
customers	O
included	O
integration	O
in	O
digital	B-Application
TV	I-Application
set-top	O
boxes	O
,	O
manufacturing	O
and	O
industrial	O
control	O
systems	O
,	O
and	O
telecom/networking	O
devices	O
.	O
</s>
<s>
eXtremeDB	B-Application
emerged	O
to	O
manage	O
what	O
industry	O
analysts	O
,	O
and	O
McObject	O
,	O
portray	O
as	O
significant	O
growth	O
in	O
the	O
amount	O
of	O
data	O
managed	O
on	O
such	O
devices	O
.	O
</s>
<s>
Later	O
editions	O
targeted	O
the	O
high	O
performance	O
non-embedded	O
software	O
market	O
,	O
including	O
capital	O
markets	O
applications	O
(	O
algorithmic	O
trading	O
,	O
order	O
matching	O
engines	O
)	O
and	O
real-time	B-Operating_System
caching	O
for	O
Web-based	O
applications	O
,	O
including	O
social	O
networks	O
and	O
e-commerce	O
.	O
</s>
<s>
eXtremeDB	B-Application
supports	O
the	O
following	O
features	O
across	O
its	O
product	O
family	O
.	O
</s>
<s>
eXtremeDB	B-Application
supports	O
multiple	O
concurrent	O
users	O
,	O
offering	O
ACID-compliant	O
transactions	O
(	O
as	O
defined	O
by	O
Jim	O
Gray	O
)	O
using	O
either	O
of	O
two	O
transaction	B-General_Concept
managers	O
:	O
a	O
multiple-reader	O
,	O
single	O
writer	O
(	O
MURSIW	O
)	O
locking	O
mechanism	O
,	O
or	O
multiversion	B-Operating_System
concurrency	I-Operating_System
control	I-Operating_System
(	O
MVCC	O
)	O
transaction	B-General_Concept
manager	O
(	O
optimistic	O
non-locking	O
model	O
)	O
.	O
</s>
<s>
eXtremeDB	B-Application
can	O
work	O
with	O
virtually	O
all	O
C	B-Language
language	I-Language
data	O
types	O
including	O
complex	O
types	O
including	O
structures	B-General_Concept
,	O
arrays	B-Data_Structure
,	O
vectors	B-Data_Structure
and	O
BLOBs	B-General_Concept
.	O
</s>
<s>
The	O
eXtremeDB	B-Application
high	O
availability	O
edition	O
supports	O
both	O
synchronous	O
(	O
2-safe	O
)	O
and	O
asynchronous	O
(	O
1-safe	O
)	O
database	B-General_Concept
replication	I-General_Concept
,	O
with	O
automatic	O
failover	B-General_Concept
.	O
</s>
<s>
eXtremeDB	B-Application
Cluster	O
edition	O
provides	O
for	O
shared-nothing	B-Operating_System
database	O
clustering	O
.	O
</s>
<s>
eXtremeDB	B-Application
also	O
supports	O
distributed	O
query	O
processing	O
,	O
in	O
which	O
the	O
database	O
is	O
partitioned	O
horizontally	O
and	O
the	O
DBMS	B-General_Concept
distributes	O
query	O
processing	O
across	O
multiple	O
servers	O
,	O
CPUs	O
and/or	O
CPU	O
cores	O
.	O
</s>
<s>
eXtremeDB	B-Application
supports	O
heterogeneous	O
client	O
platforms	O
(	O
e.g.	O
</s>
<s>
a	O
mix	O
of	O
Windows	B-Application
,	O
Linux	B-Application
and	O
RTOSs	B-Operating_System
)	O
with	O
its	O
clustering	O
and	O
high	O
availability	O
features	O
.	O
</s>
<s>
eXtremeDB	B-Application
Fusion	O
edition	O
provides	O
the	O
option	O
of	O
persistent	B-Application
storage	I-Application
(	O
disk	B-Device
or	O
flash	B-Device
)	O
for	O
specific	O
tables	O
,	O
via	O
a	O
database	B-Application
schema	I-Application
notation	O
.	O
</s>
<s>
eXtremeDB	B-Application
Transaction	B-General_Concept
Logging	O
edition	O
keeps	O
a	O
record	O
of	O
changes	O
made	O
to	O
the	O
database	O
and	O
uses	O
this	O
log	O
to	O
provide	O
recovery	O
in	O
the	O
event	O
of	O
device	O
or	O
system	O
failure	O
.	O
</s>
<s>
This	O
edition	O
includes	O
eXtremeDB	B-Application
Data	O
Relay	O
technology	O
that	O
replicates	O
selected	O
changes	O
to	O
external	O
systems	O
such	O
as	O
enterprise	O
applications	O
and	O
database	O
systems	O
.	O
</s>
<s>
The	O
eXtremeSQL	O
edition	O
provides	O
SQL	B-Language
ODBC	B-Application
support	O
in	O
eXtremeDB	B-Application
and	O
a	O
version	O
4	O
,	O
level	O
4	O
JDBC	B-Language
driver	O
.	O
</s>
<s>
The	O
eXtremeDB	B-Application
Kernel	B-Operating_System
Mode	O
edition	O
deploys	O
the	O
database	O
system	O
within	O
an	O
operating	B-Operating_System
system	I-Operating_System
kernel	I-Operating_System
,	O
to	O
provide	O
database	O
functions	O
to	O
kernel-based	O
applications	O
logic	O
.	O
</s>
<s>
eXtremeDB	B-Application
Financial	O
Edition	O
provides	O
features	O
for	O
managing	O
market	O
data	O
(	O
tick	O
data	O
)	O
in	O
applications	O
such	O
as	O
algorithmic	O
trading	O
and	O
order	O
matching	O
.	O
</s>
<s>
A	O
“	O
sequences	O
”	O
data	O
type	O
supports	O
columnar	O
data	O
layout	O
and	O
enables	O
eXtremeDB	B-Application
to	O
offer	O
the	O
benefits	O
of	O
a	O
column-oriented	B-General_Concept
database	I-General_Concept
in	O
handling	O
time	O
series	O
data	O
.	O
</s>
<s>
McObject	O
published	O
reports	O
on	O
benchmark	O
tests	O
employing	O
eXtremeDB	B-Application
.	O
</s>
<s>
Main-Memory	O
vs.	O
RAM-Disk	O
Databases	O
:	O
a	O
Linux-Based	O
Benchmark	O
examined	O
IMDS	B-General_Concept
performance	O
versus	O
that	O
of	O
a	O
traditional	O
on-disk	O
DBMS	B-General_Concept
deployed	O
on	O
a	O
RAM	B-Application
disk	I-Application
,	O
on	O
identical	O
application	O
tasks	O
.	O
</s>
<s>
The	O
benchmark	O
’s	O
stated	O
goal	O
was	O
to	O
test	O
the	O
thesis	O
that	O
an	O
IMDS	B-General_Concept
streamlined	O
architecture	O
delivers	O
a	O
performance	O
benefit	O
beyond	O
that	O
provided	O
by	O
memory-based	O
storage	O
.	O
</s>
<s>
Another	O
benchmark	O
,	O
the	O
Terabyte-Plus	O
In-Memory	B-General_Concept
Database	I-General_Concept
System	I-General_Concept
(	O
IMDS	B-General_Concept
)	O
Benchmark	O
,	O
documented	O
IMDS	B-General_Concept
scalability	O
and	O
performance	O
in	O
the	O
size	O
range	O
of	O
large	O
enterprise	O
application	O
(	O
versus	O
embedded	B-Architecture
systems	I-Architecture
)	O
databases	O
.	O
</s>
<s>
For	O
the	O
test	O
,	O
engineers	O
created	O
a	O
1.17	O
terabyte	O
,	O
15.54	O
billion	O
row	O
database	O
with	O
eXtremeDB	B-Application
on	O
a	O
160-core	O
SGI	B-Architecture
Altix	I-Architecture
4700	O
system	O
running	O
SUSE	O
Linux	B-Application
Enterprise	O
Server	O
9	O
.	O
</s>
<s>
In	O
November	O
,	O
2012	O
a	O
marketing	O
report	O
was	O
published	O
for	O
Dell	O
servers	O
with	O
Mellanox	O
InfiniBand	B-Architecture
.	O
</s>
<s>
In	O
late	O
2014	O
,	O
two	O
additional	O
audited	O
benchmark	O
reports	O
focused	O
on	O
eXtremeDB	B-Application
Financial	O
Edition	O
.	O
</s>
<s>
An	O
October	O
29	O
report	O
assessed	O
McObject	O
’s	O
DBMS	B-General_Concept
on	O
IBM	O
POWER8	O
hardware	O
.	O
</s>
<s>
A	O
November	O
18	O
report	O
documented	O
the	O
use	O
of	O
cloud	B-Architecture
computing	I-Architecture
.	O
</s>
<s>
In	O
2016	O
.	O
another	O
report	O
measured	O
the	O
eXtremeDB	B-Application
Financial	O
Edition	O
.	O
</s>
