Portal | Manuals | References | Downloads | Info | Programs | JCLs | Mainframe wiki | Quick Ref
IBM Mainframe Computers Forums Index
 
Register
 
IBM Mainframe Computers Forums Index Mainframe: Search IBM Mainframe Forum: FAQ Memberlist Profile Log in to check your private messages Log in
 
IMS is same like DB2, Is there any difference

 
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> IMS DB/DC
View previous topic :: :: View next topic  
Author Message
vamseepotti

New User


Joined: 21 Oct 2003
Posts: 45

PostPosted: Sat Mar 20, 2004 11:43 am    Post subject: IMS is same like DB2, Is there any difference
Reply with quote

What purpose we use IMS DB in projects?
Is it same like DB2, Is there any difference?
Back to top
View user's profile Send private message

NILESHK2302

New User


Joined: 13 Feb 2004
Posts: 14
Location: hyd

PostPosted: Tue Mar 23, 2004 6:30 pm    Post subject:
Reply with quote

Hi Vamsee,

IMS is Information Management System. Ims is also one type of database management system used from very long back. IMS is heirarchial database management system . DB2 as compared is relational database management system. To know better difference about IMS & DB2 first you need to know different type of database management systems. There are a lot of differences between IMS & DB2. IMS is used in many projects because of it verstality & robustness and most widely because of a concept called checkpointing. See its not only IMS DB used in projects , a conjuction of DB(BATCH ) & DC(ONLINE) are used in many shops.

Pls have a lookin some manuals/books for more info. Also can just go thru the below IBM manuals

IMS/ESA V5 Appl Pgm: DB

IMS/ESA Version 4: Application Programming: Data Communication

icon_confused.gif icon_sad.gif icon_smile.gif icon_biggrin.gif
Back to top
View user's profile Send private message
Sandy Zimmer

Active Member


Joined: 13 Jun 2007
Posts: 826
Location: Wilmington, DE

PostPosted: Thu Jun 14, 2007 1:26 am    Post subject: Re: IMS is same like DB2, Is there any difference
Reply with quote

Hi!

I've worked with both. I LOVE IMS!!!! It is eons faster than DB2 and data recovery is basically automatic. Before there was IMS, a lot of shops used VSAM which is almost like a sequential file - only with keys.
There was a lot of data redundacy. IMS was developed for the first moon project. It was not originally an IBM project. Long story short, IBM got into the picture and millions of people came online! YAY!

So if you think of it this way, IMS is the child of VSAM - DB2 is a close relative. I relate it like the root segment of an IMS heir database is the first normal of a relation DB2 database, etc, etc. I still like IMS much better.
Back to top
View user's profile Send private message
View previous topic :: :: View next topic  
Post new topic   Reply to topic    IBMMAINFRAMES.com Support Forums -> IMS DB/DC All times are GMT + 6 Hours
Page 1 of 1

 

Search our Forum:

Similar Topics
Topic Author Forum Replies Posted
This topic is locked: you cannot edit posts or make replies. Difference between EQUAL and EQUAL TO... jithinraghavan COBOL Programming 3 Thu Apr 19, 2018 2:22 am
No new posts ISMF Difference between volume count ... upendrasri IBM Tools 2 Tue Dec 05, 2017 12:40 pm
No new posts Finding difference between two PS fil... Vignesh Sid SYNCSORT 5 Mon Oct 30, 2017 1:13 pm
No new posts Difference in SORT & ICETOOL Mohan Kothakota DFSORT/ICETOOL 5 Fri Sep 22, 2017 4:56 pm
No new posts Difference between TWALENG and TWASIZE Arunkumar Chandrasekaran CICS 3 Tue Jan 03, 2017 12:57 pm

Facebook
Back to Top
 
Job Vacancies | Forum Rules | Bookmarks | Subscriptions | FAQ | Polls | Contact Us