What is a GDG
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 |
Name the system library from which modules are retrieved at execution
Wrete a JCL to compare two files and mached records move to onc file & un mached rows wants to another file?
13 Answers CGI, DSRC, IBM,
GDGs can be CREATED (not COPIED) only on DASD and NOT on tape drives ? Is it True ?
How to find the number of duplicates in a file using Sort?
how to create a member or sequential dataset through tso command??
ihave ten flatfile in that iwant to concatinate all the files except file 5,6 into output file by uing jcl? how to do this? give me detail yntax for tis?
How dummy is used in jcl?
A job has 90 steps i want to execute only step7 and step15
which utility is used a dummy utility?
What is the purpose of dd * statement in jcl?
I have a sequential file in which there are 50 records. Now I want to copy all the 50 records in the reverse order into a new file? The last record in the original file should be the first record in the new file. How can I do it?
i have a string of 80 chars i want to replace 4th char with "a"?