Answer / aannie

A generation data set is one of a collection of
successive, historically related, cataloged data sets,
known as a generation data group (GDG). Each data set
within a generation data group is called a generation data
set (GDS) or generation.
? Processing Generation Data Groups
? Absolute Generation and Version Numbers
? An absolute generation and version number is used
to identify a specific generation of a generation data
group.
? The generation and version numbers are in the
form GxxxxVyy, where xxxx is an unsigned 4-digit decimal
generation number (0001 through 9999) and yy is an unsigned
2-digit decimal version number (00 through 99)
? Relative Generation Number
As an alternative to using absolute generation and
version numbers when cataloging or referring to a
generation, we can use a relative generation number.
For example, A.B.C(-1). A.B.C(+1), or A.B.C(0).

Answer / jegadeesan ramu

Used to keep track of the records in chronological order to
create gdg base name must be created by using IBM utility
IDCAMS

Answer / dhan

Generation Data Groups (GDGs) are a group of datasets related to each other by a common name.
GDG generation file is referred by a GDG base name.
Each generation data set is distinguished by others by the generation number.

https://youtu.be/hMbB20WKmBg
https://youtu.be/3N17dh7BAaQ

Answer / ks

It is nothing but Generation data group keeps the track of
the new generations by deleting the older ones based on the
options

can we bowse or edit the GDG dataset if it is a tape entry?

4 Answers  

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can u execute a proc from another proc?

5 Answers   Logica CMG,

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How can a jobs execution priority be modified?

0 Answers  

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I found in one of the jcl, gdg version being mentioned as : abc.def.ghi(-0) Can anyone tell me how referring the version as (-0) is different from referring it as (0)

2 Answers  

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Name a few IBM utility programs, and explain its function.

0 Answers  

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Suppose we have 5 steps in a job.No step should be executed After submitting every step in a job

2 Answers   AVB, IBM,

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wht do u mean by internal reader in jcl ? wht is the use of internal reader ?

1 Answers   Syntel,

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can we maintain 2 generations with different Lengths in Same GDG ?

3 Answers   RBS,

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can a job be submitted through jcl only? is there another way to submit a job?

2 Answers   CSC,

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IN MY JCL I VE 8 STEPS I WANT TO EXCUTE STEP 8 FIRST THEN EXCUTE STEP 4 ,HOW WILL EXCUTE STEP 8 BEFORE STEP 4?

7 Answers   Cognizant, IBM, IGT,

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how to count the number of members in pds?

2 Answers  

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I had 100 steps in jcl i want to execute first 10 steps only?

6 Answers   IBM,

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