<s>
Datacom/DB	B-Application
is	O
a	O
relational	B-Application
database	I-Application
management	I-Application
system	I-Application
for	O
mainframe	B-Architecture
computers	I-Architecture
.	O
</s>
<s>
It	O
was	O
developed	O
in	O
the	O
early	O
1970s	O
by	O
Computer	O
Information	O
Management	O
Company	O
and	O
was	O
subsequently	O
owned	O
by	O
Insyte	O
,	O
Applied	B-Operating_System
Data	I-Operating_System
Research	I-Operating_System
,	O
Ameritech	O
,	O
and	O
Computer	O
Associates	O
International	O
,	O
Inc	O
.	O
Datacom	O
was	O
acquired	O
by	O
CA	O
Technologies	O
(	O
formerly	O
Computer	O
Associates	O
)	O
,	O
which	O
renamed	O
it	O
to	O
CA-Datacom/DB	O
and	O
later	O
to	O
CA	O
Datacom/DB	B-Application
.	O
</s>
<s>
In	O
2018	O
,	O
Broadcom	O
acquired	O
CA	O
Technologies	O
which	O
included	O
the	O
CA	B-Application
Datacom	I-Application
product	O
family	O
.	O
</s>
<s>
In	O
2021	O
,	O
Broadcom	O
has	O
dropped	O
the	O
CA	O
and	O
now	O
refers	O
to	O
the	O
product	O
family	O
as	O
Datacom	O
or	O
Datacom/DB	B-Application
.	O
</s>
<s>
The	O
genesis	O
of	O
modern	O
DBMS	B-General_Concept
technology	O
occurred	O
in	O
the	O
1970s	O
with	O
the	O
advent	O
of	O
huge	O
databases	O
that	O
were	O
cumbersome	O
to	O
manage	O
and	O
maintain	O
.	O
</s>
<s>
As	O
long	O
as	O
most	O
mainframe	B-Architecture
processing	O
was	O
done	O
in	O
batch	B-General_Concept
mode	I-General_Concept
,	O
the	O
rapidity	O
of	O
maintenance	O
operations	O
was	O
not	O
a	O
key	O
ingredient	O
to	O
success	O
.	O
</s>
<s>
Datacom	O
was	O
initially	O
designed	O
to	O
rapidly	O
retrieve	O
data	O
from	O
massive	O
files	O
using	O
Inverted	B-Algorithm
List	I-Algorithm
technology	O
.	O
</s>
<s>
To	O
solve	O
this	O
problem	O
,	O
Datacom/DB	B-Application
transitioned	O
to	O
relational	O
technology	O
utilizing	O
special	O
index-driven	O
capabilities	O
that	O
radically	O
improved	O
maintenance	O
with	O
no	O
loss	O
in	O
retrieval	O
speed	O
.	O
</s>
<s>
This	O
relational	O
version	O
of	O
Datacom	O
served	O
as	O
the	O
foundation	O
for	O
a	O
continuing	O
stream	O
of	O
industry-leading	O
enhancements	O
that	O
have	O
preserved	O
its	O
position	O
as	O
an	O
extremely	O
cost-effective	O
and	O
high-performing	O
DBMS	B-General_Concept
for	O
the	O
IBM	B-Device
mainframe	I-Device
.	O
</s>
<s>
In	O
1965	O
,	O
a	O
project	O
was	O
initiated	O
by	O
IBM	O
to	O
use	O
its	O
new	O
System/360	B-Application
mainframe	B-Architecture
computers	I-Architecture
to	O
automate	O
the	O
two	O
largest	O
credit	O
bureaus	O
-	O
Chilton	O
Corporation	O
of	O
Dallas	O
and	O
the	O
Credit	O
Bureau	O
of	O
Greater	O
Houston	O
-	O
and	O
the	O
national	O
association	O
of	O
credit	O
bureaus	O
.	O
</s>
<s>
At	O
this	O
time	O
CICS	B-Application
was	O
not	O
functioning	O
well	O
,	O
so	O
CIM	O
wrote	O
a	O
general	O
purpose	O
telecommunications	O
monitor	O
system	O
which	O
was	O
later	O
packaged	O
and	O
named	O
Generalized	O
Multi-Tasking	O
Monitor	O
(	O
GMT	O
)	O
.	O
</s>
<s>
Because	O
there	O
were	O
serious	O
performance	O
problems	O
with	O
ISAM	B-Application
,	O
CIM	O
designed	O
a	O
key-driven	O
adjunct	O
to	O
GMT	O
to	O
manage	O
the	O
data	O
for	O
a	O
large	O
West	O
Coast	O
savings	O
bank	O
.	O
</s>
<s>
This	O
implementation	O
became	O
the	O
foundation	O
of	O
Datacom/DB	B-Application
.	O
</s>
<s>
Consequently	O
,	O
CIM	O
needed	O
to	O
find	O
prospective	O
sites	O
with	O
technically	O
knowledgeable	O
data	B-General_Concept
processing	I-General_Concept
(	O
DP	O
)	O
managers	O
or	O
sites	O
that	O
gave	O
significant	O
executive	O
power	O
to	O
their	O
lead	O
technicians	O
.	O
</s>
<s>
Insyte	O
replaced	O
top	O
management	O
and	O
made	O
the	O
decision	O
to	O
split	O
the	O
teleprocessing	O
monitor	O
from	O
its	O
key-driven	O
access	O
method	O
and	O
rename	O
the	O
two	O
parts	O
as	O
Datacom/DC	O
(	O
for	O
data	O
communications	O
)	O
and	O
Datacom/DB	B-Application
(	O
for	O
database	O
)	O
.	O
</s>
<s>
Datacom/DB	B-Application
’	O
s	O
primary	O
competitors	O
at	O
this	O
time	O
were	O
IDMS	B-Application
,	O
IMS	B-Application
,	O
DL/1	B-Language
,	O
ADABAS	B-Application
,	O
DBOMP	B-Application
,	O
and	O
Cincom	B-Application
Systems	I-Application
 '	O
TOTAL	O
.	O
</s>
<s>
Although	O
still	O
a	O
very	O
small	O
company	O
,	O
Insyte	O
Datacom	O
became	O
well	O
known	O
throughout	O
the	O
marketplace	O
for	O
the	O
outstanding	O
speed	O
and	O
efficiency	O
of	O
its	O
Datacom/DB	B-Application
and	O
Datacom/DC	O
applications	O
.	O
</s>
<s>
In	O
1978	O
Insyte	O
sold	O
Insyte	O
Datacom	O
to	O
Applied	B-Operating_System
Data	I-Operating_System
Research	I-Operating_System
,	O
which	O
was	O
based	O
in	O
Princeton	O
,	O
New	O
Jersey	O
.	O
</s>
<s>
In	O
the	O
late	O
1970s	O
ADR	O
recognized	O
that	O
DBMS	B-General_Concept
products	O
were	O
going	O
to	O
become	O
increasingly	O
important	O
–	O
and	O
set	O
out	O
to	O
acquire	O
one	O
.	O
</s>
<s>
The	O
ADR	O
sales	O
force	O
concentrated	O
on	O
Datacom/DB	B-Application
and	O
enjoyed	O
remarkable	O
success	O
worldwide	O
with	O
several	O
thousand	O
clients	O
in	O
dozens	O
of	O
industries	O
.	O
</s>
<s>
As	O
an	O
offshoot	O
of	O
this	O
success	O
ADR	O
recognized	O
the	O
need	O
for	O
a	O
highly	O
efficient	O
and	O
sophisticated	O
application	O
development	O
language	O
for	O
Datacom/DB	B-Application
.	O
</s>
<s>
ADR	O
’s	O
Princeton-based	O
application	O
language	O
development	O
team	O
had	O
developed	O
MetaCOBOL	O
,	O
which	O
generated	O
detailed	O
and	O
accurate	O
COBOL	B-Application
statements	O
from	O
a	O
high-level	O
logical	O
language	O
set	O
.	O
</s>
<s>
Combining	O
IDEAL	O
and	O
its	O
highly-productive	O
programming	O
environment	O
with	O
Datacom/DB	B-Application
’	O
s	O
ease-of-use	O
and	O
Datacom/DC	O
’	O
s	O
high	O
performance	O
gave	O
ADR	O
a	O
very	O
potent	O
product	O
combination	O
which	O
dominated	O
industry	O
performance	O
throughout	O
the	O
1980s	O
.	O
</s>
<s>
Datacom/DC	O
was	O
designed	O
as	O
a	O
solution	O
to	O
CICS’	O
difficult-to-use	O
and	O
poorly	O
performing	O
characteristics	O
.	O
</s>
<s>
Although	O
Datacom/DC	O
solved	O
virtually	O
all	O
of	O
CICS	B-Application
’s	O
shortcomings	O
and	O
provided	O
high	O
performance	O
,	O
IBM	O
continued	O
to	O
pour	O
massive	O
resources	O
into	O
CICS	B-Application
.	O
</s>
<s>
VTAM	B-Application
’s	O
introduction	O
in	O
the	O
late	O
1980s	O
meant	O
that	O
much	O
of	O
Datacom/DC	O
would	O
have	O
to	O
be	O
gutted	O
and	O
rewritten	O
.	O
</s>
<s>
Rather	O
than	O
pursue	O
this	O
tack	O
,	O
ADR	O
chose	O
to	O
back	O
out	O
of	O
that	O
marketplace	O
and	O
replaced	O
Datacom/DC	O
with	O
CICS	B-Application
Services	O
as	O
the	O
interface	O
between	O
CICS	B-Application
,	O
Datacom	O
and	O
later	O
,	O
IDEAL	O
.	O
</s>
<s>
Even	O
though	O
IDEAL	O
was	O
originally	O
designed	O
to	O
work	O
only	O
with	O
Datacom/DB	B-Application
,	O
IDEAL	O
was	O
subsequently	O
developed	O
as	O
a	O
service	O
for	O
DB2	B-Application
.	O
</s>
<s>
ADR	O
licensed	O
DATACOM/DB	B-Application
to	O
TCSC	O
,	O
a	O
firm	O
which	O
sold	O
modified	O
versions	O
of	O
IBM	O
's	O
DOS/360	O
and	O
DOS/VS	B-Application
operating	O
systems	O
,	O
known	O
as	O
Edos	B-Application
(	O
later	O
also	O
known	O
as	O
Edos/VS	B-Application
and	O
Edos/VSE	B-Application
)	O
.	O
</s>
<s>
The	O
acquisition	O
by	O
CA	O
incorporated	O
Datacom/DB	B-Application
and	O
IDEAL	O
into	O
CA	O
’s	O
already	O
large	O
family	O
of	O
mainframe	B-Architecture
products	O
.	O
</s>
<s>
One	O
of	O
the	O
hallmarks	O
of	O
Datacom/DB	B-Application
has	O
been	O
its	O
ability	O
to	O
provide	O
major	O
new	O
enhancements	O
to	O
existing	O
application	O
programs	O
without	O
requiring	O
any	O
recoding	O
.	O
</s>
<s>
Datacom/DB	B-Application
and	O
IDEAL	O
remain	O
major	O
CA	O
products	O
today	O
and	O
are	O
the	O
data	B-General_Concept
processing	I-General_Concept
backbones	O
of	O
many	O
Fortune	O
500	O
companies	O
as	O
well	O
as	O
many	O
U.S.	O
federal	O
agencies	O
.	O
</s>
<s>
In	O
2012	O
,	O
CA	O
was	O
successful	O
in	O
a	O
lawsuit	O
against	O
an	O
Australian	O
software	O
company	O
,	O
ISI	O
Pty	O
Limited	O
,	O
which	O
offered	O
a	O
software	O
product	O
"	O
2BDB2	O
"	O
designed	O
to	O
simplify	O
migration	O
from	O
Datacom	O
to	O
IBM	O
's	O
DB2	B-Application
relational	O
database	O
.	O
</s>
<s>
2BDB2	O
contained	O
macros	O
designed	O
to	O
interoperate	O
with	O
those	O
CA	O
macros	O
used	O
by	O
software	O
to	O
access	O
Datacom	O
,	O
but	O
which	O
instead	O
connected	O
to	O
DB2	B-Application
.	O
</s>
<s>
The	O
Federal	O
Court	O
of	O
Australia	O
found	O
that	O
2BDB2	O
's	O
macros	O
were	O
based	O
on	O
those	O
included	O
in	O
CA	B-Application
Datacom	I-Application
,	O
and	O
thus	O
infringed	O
on	O
CA	O
's	O
copyright	O
;	O
while	O
there	O
is	O
an	O
interoperability	O
exception	O
under	O
Australian	O
copyright	O
law	O
,	O
the	O
Federal	O
Court	O
adopted	O
a	O
narrow	O
reading	O
of	O
that	O
exception	O
,	O
rendering	O
it	O
largely	O
unavailable	O
to	O
ISVs	O
such	O
as	O
ISI	O
.	O
</s>
