<s>
Liquibase	B-Language
is	O
an	O
open-source	B-License
database-independent	O
library	O
for	O
tracking	O
,	O
managing	O
and	O
applying	O
database	O
schema	O
changes	O
.	O
</s>
<s>
All	O
changes	O
to	O
the	O
database	O
are	O
stored	O
in	O
text	O
files	O
(	O
XML	B-Protocol
,	O
YAML	B-Protocol
,	O
JSON	B-General_Concept
or	O
SQL	B-Language
)	O
and	O
identified	O
by	O
a	O
combination	O
of	O
an	O
"	O
id	O
"	O
and	O
"	O
author	O
"	O
tag	O
as	O
well	O
as	O
the	O
name	O
of	O
the	O
file	O
itself	O
.	O
</s>
<s>
Liquibase	B-Language
automatically	O
creates	O
DatabaseChangeLog	O
Table	O
and	O
DatabaseChangeLogLock	O
Table	O
when	O
you	O
first	O
execute	O
a	O
changeLog	O
File	O
.	O
</s>
<s>
Executable	O
via	O
command	O
line	O
,	O
Apache	B-Application
Ant	I-Application
,	O
Apache	B-Language
Maven	I-Language
,	O
servlet	B-Language
container	I-Language
,	O
or	O
Spring	B-Application
Framework	I-Application
.	O
</s>
<s>
is	O
both	O
the	O
largest	O
contributor	O
to	O
the	O
Liquibase	B-Language
project	O
and	O
the	O
developer	O
of	O
Liquibase	B-Language
Enterprise	O
–	O
a	O
commercial	O
product	O
which	O
provides	O
the	O
core	O
Liquibase	B-Language
functionality	O
plus	O
additional	O
features	O
.	O
</s>
<s>
Plug-ins	O
to	O
Jenkins	B-Language
,	O
Bamboo	O
,	O
UrbanCode	O
,	O
CA	O
Release	O
Automation	O
(	O
Nolio	O
)	O
,	O
Serena	O
Release	O
Automation	O
,	O
BMC	O
Bladelogic	O
,	O
Puppet	B-Application
,	O
Chef	B-Application
,	O
as	O
well	O
all	O
popular	O
source	O
control	O
systems	O
like	O
SVN	B-Application
,	O
Git	B-Application
,	O
TFS	O
,	O
CVS	O
,	O
etc	O
.	O
</s>
<s>
Liquibase	B-Language
products	O
,	O
including	O
Liquibase	B-Language
Enterprise	O
(	O
formerly	O
known	O
as	O
Datical	O
DB	O
)	O
,	O
are	O
used	O
by	O
DBAs	O
,	O
Release	O
Managers	O
,	O
DevOps	O
teams	O
,	O
Application	O
Owners	O
,	O
Architects	O
,	O
and	O
Developers	O
involved	O
in	O
the	O
Application	O
Release	O
process	O
.	O
</s>
<s>
Liquibase	B-Language
commercial	O
products	O
build	O
upon	O
the	O
Liquibase	B-Language
Data	O
Model	O
Approach	O
for	O
managing	O
data	O
structure	O
specific	O
content	O
across	O
application	O
versions	O
as	O
they	O
advance	O
from	O
Development	O
to	O
Test	O
to	O
Production	O
environments	O
.	O
</s>
<s>
Liquibase	B-Language
developer	O
,	O
Nathan	O
Voxland	O
,	O
is	O
an	O
executive	O
at	O
Liquibase	B-Language
(	O
formerly	O
Datical	O
)	O
.	O
</s>
