View previous topic :: View next topic
|
Author |
Message |
sushanth bobby
Senior Member
Joined: 29 Jul 2008 Posts: 1020 Location: India
|
|
|
|
Hi ALL,
I have been having been wondering about this for a long time.
I google'd but, i couldn't find the answer. what i want to know is......
Why it is CALLED DB2 ?
I know DB - DataBase.
I want to know the reason for the number "2".
First when i heard about the number. I thought, it was the version number.
Later came to know that, it is not the version number
My another question is, which is the first DATABASE ?
I got this from wikkipedia,
ORACLE
Quote: |
Larry Ellison and his friends and former co-workers Bob Miner and Ed Oates started the consultancy Software Development Laboratories (SDL) in 1977. SDL developed the original version of the Oracle software.
1979: SDL changed its company-name to "Relational Software, Inc." (RSI) and introduced its product Oracle V2 as an early commercially-available relational database system. |
This i got from a blog,
Quote: |
In 1980, Oracle version 2 was released and with it RSI became the first ever company to release a commercial relational database using SQL. |
IBM DB2
From wikkipedia,
Quote: |
DB2 has a long history and is considered by many to have been the first
database product to use SQL (also first developed by IBM).
The name DB2 was first given to the Database Management System or DBMS in 1983 when IBM released DB2 on its MVS mainframe platform. |
My 2 basic questions.....
What is the reason the letter 2 in DB2 ?
Which is the first DATABASE(ORACLE or DB2 or is there somthing else) ?
Since, i am working on DB2, i am getting questions such as this....
Please clarify and clear my doubt ?
I know this sounds little childish to ask ?
Please ENLIGHTEN me,
Sushanth Bobby |
|
Back to top |
|
|
Marso
REXX Moderator
Joined: 13 Mar 2006 Posts: 1353 Location: Israel
|
|
|
|
In Israel, we had (back in the 80's) a product called DB1.
AFAIK, it still exist today, being the database used by Sapiens, a 4th generation language.
That may be why IBM had to choose DB2!? |
|
Back to top |
|
|
Marso
REXX Moderator
Joined: 13 Mar 2006 Posts: 1353 Location: Israel
|
|
|
|
Oh, I forgot to say that DB1 does not use SQL, so the following is still valid:
Quote: |
DB2 has a long history and is considered by many to have been the first
database product to use SQL (also first developed by IBM). |
|
|
Back to top |
|
|
sushanth bobby
Senior Member
Joined: 29 Jul 2008 Posts: 1020 Location: India
|
|
|
|
Oh THANK YOU! THANK YOU! THANK YOU!
MARSO.............
For this precious information.....
Sushanth |
|
Back to top |
|
|
Prasanthhere
Active User
Joined: 03 Aug 2005 Posts: 306
|
|
Back to top |
|
|
Prasanthhere
Active User
Joined: 03 Aug 2005 Posts: 306
|
|
Back to top |
|
|
sushanth bobby
Senior Member
Joined: 29 Jul 2008 Posts: 1020 Location: India
|
|
|
|
Thank You Prasanth,
Those links were all interesting ones.......
Sushanth |
|
Back to top |
|
|
Robert Sample
Global Moderator
Joined: 06 Jun 2008 Posts: 8696 Location: Dubuque, Iowa, USA
|
|
|
|
Quote: |
Which is the first DATABASE(ORACLE or DB2 or is there somthing else) ? |
IMS dates back to 1968. SYSTEM 2000 dates back to the late 60's or early 70's (I'm not sure how far back). IDMS was based on an earlier product developed in the early 60's. Hierarchical and network database structures were well understood by the mid to late 60's so several database software products were available. Relational databases for a mainframe didn't come around until 1983 with DB2, and DB2 was based on research IBM did on System R in the early to mid 70's. |
|
Back to top |
|
|
enrico-sorichetti
Superior Member
Joined: 14 Mar 2007 Posts: 10872 Location: italy
|
|
|
|
IIRC in the IBM world the precursors of database systems were
BOMP - born to support bill of material processing
and it's offpring
D-BOMP
BOMP was originally designed as a file access method for MRP ( material requirement and planning )
from some MRP blogs Gene Thomas invented BOMP in 1961 |
|
Back to top |
|
|
dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006 Posts: 19244 Location: Inside the Matrix
|
|
|
|
Hello,
Quote: |
Which is the first DATABASE(ORACLE or DB2 or is there somthing else) |
Oracle and DB2 are rather late-comers to the database engine game.
Before DB2, IBM had an offering called SQL/DS (which may have been IBM's first sql-based db).
As mentioned, IMS has been around since the late 60's. So were/are TOTAL, Datacom, Model204, and IDMS. I believe Adabas arrived in the early 70's. |
|
Back to top |
|
|
Terry Heinze
JCL Moderator
Joined: 14 Jul 2008 Posts: 1249 Location: Richfield, MN, USA
|
|
|
|
I heard many years ago that DB2 was given the number 2 because IMS was considered to be DB1 although it was never called that. |
|
Back to top |
|
|
sushanth bobby
Senior Member
Joined: 29 Jul 2008 Posts: 1020 Location: India
|
|
|
|
Thank You Guyz,
Sushanth Bobby |
|
Back to top |
|
|
|