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IMS DB Interview Questions

 
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venkatarao

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Joined: 19 Dec 2004
Posts: 24
Location: hyderabad

PostPosted: Tue Jul 26, 2005 9:40 am    Post subject: IMS DB Interview Questions
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Posted: Wed Jul 20, 2005 10:38 am Post subject: ims

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1.how the system will know it is cobol-ims program or db2-cobol program when at run time?

2.how do u browse ur ims database in your project?

3.how do u know which mode dl/i- batch or bmp or mpp the program is running?

4.while i am using comman codes , i have used p to set perentage then i try to insert new record what happen weather parentage is still alive or dislove?

5. while i am reading segemt ocurrences by gn calls i want to replace one of the segment key field, is it possible or i have to define different pcb for replace call? [/b]
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EnjoyMF

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Joined: 27 May 2005
Posts: 88

PostPosted: Wed Jul 27, 2005 11:40 am    Post subject: Re: IMS DB Interview Questions
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hi venkat

1 . u use DFSrrc00 program for IMS DB to run the we use IKJEFT01 for DB2 pgm and there are CALL 'CBLTDLI' statements which identifies the IMS programs

there is no program preparation process for IMSDB ( BIND,PLAN etc)

2. to browse IMSDB database we must use FILE-AID for IMS

3.All DL/I programs actually run as subroutines to the IMS. The IMS
program is named DFSRRC00 and the application program and PSB are
parameters coded on the execution statement.

// EXEC PGM=DFSRR00,
// PARM=(BMP,BMA001,BMAPSB,,,,,,1,,IMSS,,,N)

EXECUTION TYPE BMP
APPLICATION PROGRAM BMA001
PSB BMAPSB
TIMEOUT OPTION 1
CONTROL REGION ID IMSS
DBRC INDICATOR N

4. i suppose the parentage is lost then we try to insert new record .

5.it is not possible to update the key field of segment.

i hope these materails may help u

regards
prasad
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