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Difference b/w IMS and DB2

 
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muthukumarapandian

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Joined: 08 Oct 2004
Posts: 42
Location: chennai, india

PostPosted: Thu Feb 24, 2005 7:43 pm    Post subject: Difference b/w IMS and DB2
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Hai,

What is the difference b/w IMS and DB2 as a biginner what should i do to learn IMS.
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sudhakar227

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Joined: 24 Feb 2005
Posts: 1

PostPosted: Thu Feb 24, 2005 9:22 pm    Post subject:
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Hi,
IMS - Hirerchical Database Use DL/I calls
DB2 - Relational Datsbase Use EXEC SQL stmts

In Steve Elklosin what given is

Suppose in COBOL u declared One Group item 10 times using OCCURS clause. For this already space is allocated even before the records are stored. In IMS these are stored as OCCURENCES.
And also the Parent-Child relationship can differ with DB2.
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NILESHK2302

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Joined: 13 Feb 2004
Posts: 14
Location: hyd

PostPosted: Fri Mar 04, 2005 6:25 am    Post subject: ims basics
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Please read the book

IMS for the COBOL programmer part 1 by Steve Eckols
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sudheer648

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Joined: 23 May 2005
Posts: 97
Location: Chennai

PostPosted: Wed Jun 01, 2005 3:23 pm    Post subject: Re: Difference b/w IMS and DB2
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Hi,

Get Yourself Comfortable about the Basics of IMS

1.SSA(QUA/Unqualified)
2.Qua/Unqualified Calls
3.PCB
4.PSB
5.Modes in which IMS runs
6.Difference between these Modes and how to write Jcls for those.
7.Different Function codes for different calls available in IMS
8.Restart Logic of IMS
9.CheckPoint Mechanism
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