3K of RAM available on the VIC-20. The other 5K were taken up by the
operating system. I had a terminal emulator program that allowed me to
dial-up at 300 baud and run an IBM mainframe from home. Real bleeding-edge
stuff at the time (LOL).
Robertson Lee
- lerobe To: Multiple recipients of list ORACLE-L
<lerobe <[EMAIL PROTECTED]>
@acxiom.co.uk cc:
> Subject: RE: RE: Difference Between
Sent by: root DBMS/RDBMS
06/25/2002
11:13 AM
Please
respond to
ORACLE-L
Erm, programmed at college on something called a Sinclair ZX80 Spectrum 1K
ram !!!!!!
-----Original Message-----
Sent: 25 June 2002 15:58
To: Multiple recipients of list ORACLE-L
Tom,
As I recall DB2 on a PC came about way back in the dark days of the
8080
processor and DOS (no version) somewhere around 1980 I believe. I seem to
vaguely remember running it on a very old (now a days) predecessor of the
laptop. If memory is serving I believe it was called an Osborne? RDB was
offered on the IBM mainframe and there was a VAX version that I remember
playing
with as well.
Yeah, it's good to be old and reflect on the twists & turns we went
through
to make things work. Anyone remember programming with less than 1MB of
ram?
I
remember trying to make things work on 16K.
Dick Goulet
Human memory is fragile, thank GOD!
____________________Reply Separator____________________
Author: "Mercadante; Thomas F" <[EMAIL PROTECTED]>
Date: 6/25/2002 6:08 AM
Oh you bunch of young whipper-snappers!
A long time ago in a place far-away, we started with simple File Systems.
Then came ISAM file systems.
These begate DBMS systems. Note there was no 'R' in original DBMS systems.
Some of these were simply an extention to ISAM files that allowed (and
demanded) a more formalized collection of files. In these files, there
were
tables and indexes and primary keys. I remember these as "Hierarchical
Database Systems". Still no such thing as foreign keys.
Finally, I believe, DEC came out with the RBMS system which was (I know I
will be corrected on this) one of the first Relational Database Managment
Systems to be made available for large systems. (I have no knowledge of
IBM
products - anybody? When did DB2 make itself known?).
On PC's there was also something called RDB I think.
See, its good to be old!
Tom Mercadante
Oracle Certified Professional
-----Original Message-----
Sent: Tuesday, June 25, 2002 8:24 AM
To: Multiple recipients of list ORACLE-L
i give up the R, is that the difference?
joe
Santosh Varma wrote:
> could any body point me the difference(s) between DBMS and RDBMS ??
> because in DBMS also as in RDBMS, we can related two or more
> tables..if a column exists in another table for relation ??
>
> Thanks and regards,
>
> Santosh
>
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