<s>
SequoiaDB	B-Application
is	O
a	O
multi-model	O
NewSQL	B-General_Concept
database	O
.	O
</s>
<s>
SequoiaDB	B-Application
provides	O
distributed	O
NewSQL	B-General_Concept
,	O
distributed	O
file	O
system	O
and	O
object	O
storage	O
,	O
and	O
high-performance	O
NoSQL	O
storage	O
modes	O
,	O
corresponding	O
to	O
distributed	O
online	O
transactions	O
,	O
unstructured	B-Application
data	I-Application
and	O
content	O
management	O
,	O
as	O
well	O
as	O
massive	O
data	O
management	O
and	O
high	O
performance	O
access	O
scenarios	O
.	O
</s>
<s>
SequoiaDB	B-Application
's	O
first	O
release	O
is	O
in	O
2013	O
,	O
SequoiaDB	B-Application
was	O
open-source	O
in	O
December	O
2014	O
.	O
</s>
<s>
The	O
latest	O
release	O
of	O
SequoiaDB	B-Application
is	O
v3.0	O
.	O
</s>
<s>
In	O
2017	O
and	O
2018	O
,	O
SequoiaDB	B-Application
is	O
listed	O
in	O
Gartner	O
’s	O
database	O
report	O
,	O
and	O
is	O
the	O
first	O
Chinese	O
database	O
vendor	O
listed	O
.	O
</s>
<s>
SequoiaDB	B-Application
database	O
engine	O
is	O
under	O
GNU	B-Application
Affero	I-Application
General	I-Application
Public	I-Application
License	I-Application
(	O
AGPL	O
V	O
3.0	O
)	O
license	O
,	O
and	O
the	O
clients	O
,	O
drivers	O
and	O
connectors	O
are	O
under	O
Apache	B-Application
License	I-Application
V2.0	O
.	O
</s>
<s>
SequoiaDB	B-Application
applies	O
distributed	O
structure	O
.	O
</s>
<s>
In	O
a	O
client	O
terminal	O
(	O
or	O
an	O
application	O
terminal	O
)	O
,	O
local	O
or/and	O
remote	O
applications	O
are	O
linked	O
to	O
SequoiaDB	B-Application
client	O
library	O
.	O
</s>
<s>
Local	O
or/and	O
remote	O
applications	O
communicate	O
with	O
catalog	O
node	O
under	O
TCP/IP	B-Protocol
protocol	I-Protocol
.	O
</s>
<s>
SequoiaDB	B-Application
3.0	O
uses	O
a	O
"	O
Storage-SQL	O
"	O
architecture	O
,	O
which	O
SQL	O
layer	O
and	O
storage	O
engine	O
layer	O
are	O
independent	O
of	O
each	O
other	O
,	O
similar	O
architectures	O
also	O
appear	O
on	O
many	O
new-generation	O
distributed	O
databases	O
such	O
as	O
AWS	B-Application
's	O
Aurora	O
.	O
</s>
<s>
SequoiaDB	B-Application
provide	O
full	O
ACID	O
support	O
and	O
transactions	O
cross	O
nodes/clusters	O
.	O
</s>
<s>
SequoiaDB	B-Application
3.0	O
has	O
fully	O
supported	O
ACID	O
and	O
100%	O
support	O
atomicity	O
,	O
consistency	O
,	O
isolation	O
,	O
and	O
durability	O
(	O
ACID	O
)	O
.	O
</s>
<s>
Standard	O
SQL	O
Support	O
:	O
SequoiaDB	B-Application
provides	O
a	O
distributed	O
SQL	O
engine	O
plugin	O
called	O
SequoiaSQL	O
,	O
which	O
supports	O
standard	O
SQL-2003	O
and	O
MySQL/PostgreSQL	O
both	O
on	O
syntax	O
and	O
protocol	O
level	O
.	O
</s>
<s>
Multi-Model	O
:	O
SequoiaDB	B-Application
supports	O
both	O
relational(structured )	O
,	O
object	O
data	O
(	O
unstructured	O
)	O
and	O
JSON	O
(	O
semi-structured	O
)	O
data	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
For	O
storage	O
engine	O
,	O
SequoiaDB	B-Application
uses	O
JSON	O
document-oriented	O
data	O
storage	O
model	O
.	O
</s>
<s>
SequoiaDB	B-Application
has	O
its	O
Spark	O
connector	O
to	O
integrate	O
with	O
Spark	O
.	O
</s>
<s>
Disaster	O
Recovery	O
:	O
SequoiaDB	B-Application
uses	O
MPP	O
architecture	O
to	O
serve	O
GDPS	O
natively	O
.	O
</s>
<s>
SequoiaDB	B-Application
supports	O
the	O
active-active	O
data	O
centers	O
depending	O
on	O
the	O
network	O
capacity	O
.	O
</s>
<s>
SequoiaDB	B-Application
deployment	O
for	O
dual	O
data	O
centers	O
in	O
the	O
same	O
city	O
works	O
perfectly	O
.	O
</s>
<s>
SequoiaDB	B-Application
supports	O
a	O
lot	O
of	O
programming	O
languages	O
,	O
including	O
C	B-Language
,	O
C++	B-Language
,	O
C#	B-Application
,	O
Java	B-Language
,	O
PHP	B-Application
,	O
Python	B-Language
etc	O
.	O
</s>
