What is a GDG? How is it referenced? How is it defined? What
is a MODELDSCB?

Answer Posted / krithiga hari

Generation Data Groups or GDGs are a group of data sets
which are related to each other chronologically and
functionally.
Generation 0 references the current generation.
Generation -1 references the generation just before the
current generation.
Generation +1 references the generation just after the
current generation.
MODELDSCB is a model prototype which contains the
specification for the DCB subparameters for all data sets
that will belong to the GDG. Each time a data set belonging
to that GDG is created, it will use the DCB subparameters
specified in the model prototype.

Is This Answer Correct ?    4 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

WORKING-STORAGE SECTION. 77 W-A PIC 9(3)V99 VALUE 23.75. 77 W-B PIC ZZ9V99 VALUE 123.45. PROCEDURE DIVISION. MOVE W-A TO W-B. DISPLAY W-B. STOP RUN. compiler : IGYGR1080-S A "VALUE" clause literal was not compatible with the data category o subject data item. The "VALUE" clause was discarded. WORKING-STORAGE SECTION. 77 W-A PIC 9(3)V99 VALUE 23.75. 77 W-B PIC ZZ9V99. PROCEDURE DIVISION. MOVE 123.45 TO W-B. MOVE W-A TO W-B. DISPLAY W-B. STOP RUN. 2375

1033


What are the parameter we cannot use in procedure? How many instream we can write in single jcl?

577


I HAVE A VB BLOCK WHICH IS USED AS INPUT IN COBOL CONATINING SOME RECORDS CAN I CHANGE THE FILE FROM VB TO FB?

2095


List the different jcl statements that are not permitted in the procedures?

634


what is DSN parameter and DISP parameter is used for?

671






What is the function of //cntl statement?

827


Can an individual step be restricted from using all the jobs allowed cpu time?

1005


I have a COBOL program that ACCEPTs some input data. How do you code the JCL statement for this?

692


what is the use of IEBGENER utility?

654


Explain about LMFREE�free data set from its association with data ID

996


Suppose I have a program in cobol name ”careerride” and want to execute the program by jcl. Specify the process?

668


what is the purpose of coding class parameter in job statement?

713


What is the purpose of the dd keylen parameter?

718


Explain dfsort utility?

665


Why block size is multiple of lrecl in jcl?

908