What is a cluster?
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Answer / jynthe
A cluster can be thought of as a logical dataset consisting
of two separate physical datasets namely data component and
index component
Data component contains the actual data, and the index
component contains the index(ie) the key values which we
have set.
anybody can darely take this as an answer. i m very sure
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Answer / guest
A cluster is the combination of the index, sequence set and
data portions of the dataset. The operating system gives
program access to the cluster, ie. to all parts of the
dataset simultaneously.
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I have three fields in a Variable VSAM file X(2) Y(10) occurs X times Z(02) Say for the first record X=2 then the length of the file is 2+(10*3)+2=34 second record, x=4 then 4+(10*4)+2=46 If any time if the field x is updated then the total length changes. Is it feasible? Is it
What is the purpose of the FILE STATUS clause in the SELECT statement?
Differentiate between control interval (ci) and control area (ca)?
Suppose a generation of GDG gets created in a particular step of a proc. How would you refer the current generation in a subsequent step? What would be the disposition of this generation now?
What is a CI, control interval?
How is record management performed in vsam?
write a program to read from a VSAM file , there will be a 5 records to create name. empno. resignation and address to update in a db2 table and call another program using dynamic call to find the matching fields in program 1 to update in db2 table. anybody pls send de program for dis ? thanks in advance...
what do you mean by a vsam slot?
Do all versions of the GDG have to be of the same record length ? is it possible to ovverride the dcb of the model dataset?
what will happen when you try to open an empty vsam file in a cobol program for input?
If fspc(100 100) is specified does it mean that both the control interval and control area will be left empty because 100 % of both ci and ca are specified to be empty?
what do you mean by recovery and speed parameters in define cluster command?
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