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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Difference Between DBMS/RDBMS
1978, Boeing at Seattle. There was a product called RIM (relational information manager) that ran on IBM 370's. We didn't use it too much at Boeing because we had ARX which was sort of a first cousin. If Boeing could sell software the way that they sell airplanes I doubt if DB2 or Oracle would be more than an historical oddity. RIM migrated to PCs as RBase. There was at least one other SQL-based information manager running around at that time (on IBM mainframes) but I can't remember it's acronym. Heck, we didn't even know enough to call them "Data Base Managers". We just called them "Data Managers" or "Information Managers".
As for banging rocks together to make silicon chips --- doesn't anyone remember why core memory is called "core"? Has anyone else every seen a real core meltdown? It's not a pretty picture but your CRT does some amazing things while it's happening.
DENNIS
WILLIAMS To: Multiple recipients of list ORACLE-L
<DWILLIAMS <ORACLE-L_at_fatcity.com>
@LIFETOUCH.CO cc:
M> Subject: RE: Difference Between DBMS/RDBMS
Sent by: root
06/25/2002
11:43 AM
Please
respond to
ORACLE-L
Tom
I don't have the book here at work, so I'm doing this from memory.
IBM created an experimental relational database named "System R", which is
usually acknowledged as the first RDBMS. Being a large bureaucratic
organization that was making a fortune on non-relational databases, IBM did
not swiftly move the RDBMS to production status. I recall System R used SQL
as its query language. The historical irony is that a small organization
rushed its SQL-based product, Oracle, into production well ahead of IBM.
How
I believe Oracle had four advantages which caused it to come out as the RDBMS leader:
Dennis Williams
DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com
-----Original Message-----
Sent: Tuesday, June 25, 2002 9:08 AM
To: Multiple recipients of list ORACLE-L
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
>
-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Joe Testa INET: jtesta_at_dmc-it.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Mercadante, Thomas F INET: NDATFM_at_labor.state.ny.us Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: DENNIS WILLIAMS INET: DWILLIAMS_at_LIFETOUCH.COM Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Thomas Day INET: tday6_at_csc.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Tue Jun 25 2002 - 12:54:13 CDT
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