Interested to Buy Any Domain ? << Click Here >> for more details...
What is a GDG
- 4 Answers
- 18600 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
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).
| Is This Answer Correct ? | 10 Yes | 1 No |
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
| Is This Answer Correct ? | 3 Yes | 1 No |
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
| Is This Answer Correct ? | 1 Yes | 0 No |
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
| Is This Answer Correct ? | 1 Yes | 2 No |
what are the various stages of job processing?
Give the syntax of job specifying jcl statement.
What is the job entry system used in your project? based on what criteria the sequence of jobs are picked if priority is not mentioned in the job card?
There is a procedure in A.B.PROCS(PROC1) (member name is PROC1) //PROCA... There is a call to a procedure PROCA from a JOB. //STEP01 EXEC PROCA ... Here "PROCA" in JOB refers to the actual PROC name or the member name of the PDS where this PROCA is stored.
Is condition checking possible in jcl? If yes, how?
What is jcl in mainframe?
which are the parameters mandatory in job card ?
I HAVE A SEQUENTIAL FILE CONTAINING ONE RECORD IN WHICH I HAVE ONE FIELD AS CUSTOMER IDENTITY NUMBER FIELD WHICH IS A SIGNED FIELD. HOW TO SEQUENTIALLY INCREMENT THIS FIELD USING OVERLAY PARAMETER?.
how to modify the copy book?explain with examples
List the different components of jcl statement?
Is stepname is a MUST and should be unique also for each JOBSTEP ? or system can supply the stepname for a step which is not given a name by the programmer ?
by using cond parameter maximum 8 cond can be coded in single cond means ?explain
COBOL 
