<s>
SQL-92	B-Language
was	O
the	O
third	O
revision	O
of	O
the	O
SQL	B-Language
database	I-Language
query	B-Language
language	I-Language
.	O
</s>
<s>
Unlike	O
SQL-89	O
,	O
it	O
was	O
a	O
major	O
revision	O
of	O
the	O
standard	O
.	O
</s>
<s>
Aside	O
from	O
a	O
few	O
minor	O
incompatibilities	O
,	O
the	O
SQL-89	O
standard	O
is	O
forward-compatible	O
with	O
SQL-92	B-Language
.	O
</s>
<s>
The	O
standard	O
specification	O
itself	O
grew	O
about	O
five	O
times	O
compared	O
to	O
SQL-89	O
.	O
</s>
<s>
However	O
,	O
most	O
of	O
the	O
new	O
features	O
were	O
added	O
to	O
the	O
"	O
intermediate	O
"	O
and	O
"	O
full	O
"	O
tiers	O
of	O
the	O
specification	O
,	O
meaning	O
that	O
conformance	O
with	O
SQL-92	B-Language
entry	O
level	O
was	O
scarcely	O
any	O
more	O
demanding	O
than	O
conformance	O
with	O
SQL-89	O
.	O
</s>
<s>
Later	O
revisions	O
of	O
the	O
standard	O
include	O
SQL:1999	B-Language
(	O
SQL3	B-Language
)	O
,	O
SQL:2003	B-Language
,	O
SQL:2008	B-Language
,	O
SQL:2011	B-Language
and	O
SQL:2016	B-Language
.	O
</s>
<s>
Support	O
for	O
additional	O
character	B-General_Concept
sets	I-General_Concept
beyond	O
the	O
base	O
requirement	O
for	O
representing	O
SQL	B-Language
statements	O
.	O
</s>
<s>
For	O
an	O
example	O
,	O
see	O
Case	O
(	O
SQL	B-Language
)	O
.	O
</s>
<s>
Support	O
for	O
alterations	O
of	O
schema	B-Language
definitions	I-Language
via	O
ALTER	O
and	O
DROP	O
.	O
</s>
<s>
Bindings	O
for	O
C	B-Language
,	O
Ada	B-Language
,	O
and	O
MUMPS	B-Language
.	O
</s>
<s>
New	O
integrity-checking	O
functionality	O
such	O
as	O
within	O
a	O
CHECK	B-Language
constraint	I-Language
.	O
</s>
<s>
Transaction	B-General_Concept
isolation	I-General_Concept
levels	I-General_Concept
.	O
</s>
<s>
Compatibility	O
flagging	O
for	O
backwards	O
and	O
forwards	O
compatibility	O
with	O
other	O
SQL	B-Language
standards	O
.	O
</s>
