<s>
Lotus	O
Development	O
's	O
DataLens	O
,	O
originally	O
known	O
as	O
Blueprint	O
,	O
was	O
a	O
standardized	O
system	O
for	O
database	O
queries	O
used	O
in	O
a	O
number	O
of	O
Lotus	O
products	O
,	O
notably	O
1-2-3	B-Application
.	O
</s>
<s>
It	O
provided	O
drivers	O
for	O
a	O
number	O
of	O
common	O
data	O
sources	O
,	O
including	O
a	O
variety	O
of	O
mainframe	B-Architecture
SQL	B-Language
servers	I-Language
,	O
microcomputer	B-Architecture
database	O
files	O
of	O
various	O
sorts	O
,	O
and	O
even	O
flat-file	O
systems	O
.	O
</s>
<s>
Unlike	O
the	O
better-known	O
ODBC	B-Application
,	O
DataLens	O
did	O
not	O
use	O
SQL	B-Language
in	O
the	O
query	O
interface	O
.	O
</s>
<s>
The	O
API	B-Application
was	O
based	O
on	O
a	O
variety	O
of	O
data	B-General_Concept
structures	I-General_Concept
that	O
were	O
interpreted	O
by	O
the	O
database	B-Application
drivers	I-Application
into	O
their	O
own	O
internal	O
query	O
format	O
-	O
including	O
SQL	B-Language
in	O
some	O
cases	O
.	O
</s>
<s>
In	O
contrast	O
,	O
ODBC	B-Application
used	O
SQL	B-Language
as	O
its	O
basic	O
interface	O
,	O
and	O
interpreted	O
and	O
translated	O
it	O
in	O
the	O
driver	O
for	O
those	O
data	O
sources	O
that	O
did	O
not	O
use	O
SQL	B-Language
.	O
</s>
<s>
Lotus	O
also	O
released	O
two	O
user-oriented	O
query	O
builders	O
,	O
the	O
DOS-based	O
Query	O
Builder	O
which	O
could	O
interact	O
with	O
DataLens	O
sources	O
but	O
was	O
not	O
built	O
on	O
it	O
,	O
and	O
the	O
Windows-based	O
Data	O
Query	O
Assistant	O
(	O
DQA	O
)	O
which	O
was	O
built	O
directly	O
on	O
DataLens	O
.	O
</s>
