<s>
LINC	O
(	O
"	O
Logic	O
and	O
Information	O
Network	O
Compiler	O
"	O
)	O
is	O
a	O
fourth-generation	B-Language
programming	I-Language
language	I-Language
,	O
used	O
mostly	O
on	O
Unisys	O
computer	O
systems	O
.	O
</s>
<s>
What	O
allowed	O
LINC	O
to	O
make	O
programmers	O
much	O
more	O
efficient	O
and	O
the	O
application	O
systems	O
they	O
produced	O
easier	O
to	O
read	O
and	O
maintain	O
,	O
and	O
differentiated	O
it	O
from	O
being	O
simply	O
yet	O
another	O
third	O
generation	O
high	B-Language
level	I-Language
language	I-Language
,	O
was	O
LINC	O
's	O
assumption	O
,	O
use	O
of	O
,	O
and	O
total	O
reliance	O
on	O
all	O
of	O
the	O
facilities	O
available	O
,	O
and	O
packaged	O
,	O
with	O
the	O
Burroughs	O
computer	O
for	O
which	O
it	O
was	O
written	O
:	O
operating	O
system	O
,	O
job	O
control	O
language	O
,	O
COBOL	B-Application
programming	I-Application
language	I-Application
,	O
database	O
management	O
system	O
,	O
network	O
definition	O
,	O
user	O
terminal	O
,	O
etc	O
.	O
</s>
<s>
Where	O
LINC	O
(	O
and	O
LIRC	O
)	O
specifications	O
had	O
previously	O
been	O
held	O
in	O
source-code	O
files	O
,	O
they	O
were	O
now	O
held	O
in	O
a	O
database	O
(	O
designed	O
and	O
developed	O
using	O
the	O
LINC	B-Language
4GL	I-Language
)	O
and	O
subject	O
to	O
rigorous	O
automatic	O
validation	O
.	O
</s>
<s>
"	O
mocking	O
"	O
-up	O
a	O
CRT	B-Device
data-entry	O
screen	O
)	O
was	O
used	O
to	O
assist	O
system	O
definition	O
.	O
</s>
<s>
LDA	O
was	O
written	O
in	O
a	O
mixture	O
of	O
Smalltalk	O
and	O
C++	O
rather	O
than	O
the	O
LINC	B-Language
4GL	I-Language
(	O
the	O
latter	O
of	O
which	O
was	O
not	O
intended	O
to	O
run	O
on	O
a	O
personal	O
computer	O
)	O
.	O
</s>
<s>
Now	O
LINC	O
is	O
known	O
as	O
Unisys	O
Enterprise	O
Application	O
Environment	O
(	O
EAE	O
)	O
and	O
can	O
generate	O
COBOL	B-Application
code	O
for	O
Burroughs	O
&	O
Sperry	O
mainframes	O
,	O
Microsoft	B-Application
Windows	I-Application
,	O
and	O
various	O
Unix	B-Application
and	O
Linux	B-Application
platforms	O
.	O
</s>
<s>
Databases	O
supported	O
include	O
Burroughs	B-Application
DMSII	I-Application
,	O
Sperry	O
RDMS	O
,	O
Oracle	B-General_Concept
database	I-General_Concept
and	O
Microsoft	O
SQL	O
Server.Recent	O
Update:Unisys	O
is	O
replacing	O
EAE	O
with	O
Unisys	O
Agile	O
Business	O
Suite	O
 '	O
(	O
AB	O
Suite	O
)	O
.	O
</s>
<s>
AB	O
Suite	O
generates	O
to	O
either	O
a	O
.NET	O
environment	O
or	O
a	O
ClearPath	O
MCP	B-Application
environment	O
.	O
</s>
<s>
With	O
AB	O
Suite	O
a	O
developer	O
has	O
to	O
write	O
less	O
code	O
than	O
in	O
a	O
traditional	O
C#	O
or	O
Java	B-Language
environment	O
.	O
</s>
<s>
B1000	B-Device
hardware	O
,	O
</s>
<s>
MCP	B-Application
operating	O
system	O
,	O
</s>
<s>
COBOL	B-Application
application	O
programming	O
language	O
,	O
</s>
<s>
WFL	B-Language
job	I-Language
control	I-Language
language	I-Language
,	O
</s>
<s>
DMS	B-Application
II	I-Application
database	O
management	O
system	O
,	O
</s>
<s>
MT983/ET1100	O
CRT	B-Device
(	O
user	O
terminal	O
)	O
,	O
</s>
<s>
The	O
LINC	O
system	O
created	O
3rd	O
GL	O
COBOL	B-Application
(	O
application	O
)	O
,	O
DMSII	O
(	O
database	O
definition	O
)	O
,	O
NDLII	O
(	O
network	O
description	O
)	O
,	O
and	O
WFL	O
(	O
job	O
control	O
)	O
source	O
code	O
.	O
</s>
<s>
An	O
early	O
requirement	O
was	O
to	O
extend	O
the	O
product	O
for	O
use	O
with	O
the	O
Burroughs	O
mid-range	B-Language
and	O
large	B-Device
scale	I-Device
computing	O
platforms	O
.	O
</s>
<s>
After	O
Burroughs	O
merged	O
with	O
Sperry	O
Corporation	O
to	O
form	O
Unisys	O
,	O
the	O
language	O
was	O
extended	O
to	O
be	O
used	O
on	O
Sperry	O
's	O
UNIVAC	B-Device
1100/2200	I-Device
series	I-Device
machines	O
also	O
.	O
</s>
<s>
Gil	O
Simpsons	O
Christchurch	O
team	O
went	O
on	O
to	O
create	O
the	O
Jade	B-Language
language/database	O
that	O
could	O
import	O
and	O
run	O
LINC	O
code	O
on	O
commodity	O
hardware	O
.	O
</s>
<s>
It	O
provides	O
an	O
intuitive	O
and	O
easy-to-understand	O
interface	O
to	O
the	O
Burroughs	O
DMS	O
and	O
COBOL	B-Application
programming	O
.	O
</s>
<s>
Other	O
weaknesses	O
arise	O
mostly	O
from	O
its	O
dependence	O
and	O
basis	O
on	O
Burroughs	O
DMS	O
and	O
COBOL	B-Application
,	O
which	O
differ	O
greatly	O
from	O
other	O
computing	O
platforms	O
.	O
</s>
<s>
People	O
entering	O
the	O
industry	O
or	O
from	O
a	O
Unix	B-Application
/	O
Windows	O
background	O
may	O
struggle	O
to	O
adjust	O
to	O
this	O
different	O
paradigm	O
.	O
</s>
<s>
You	O
ca	O
n't	O
use	O
optimal	O
Oracle	B-General_Concept
structures	O
or	O
queries	O
if	O
the	O
mainframe	O
platforms	O
do	O
n't	O
support	O
them	O
.	O
</s>
