to use the rewrite command, how should the vsam file be opened?
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Can we copy a sequential file to a VSAM file ? If yes, What will happen of the size of the sequential file is bigger than that of the VSAM file?
Define a path?
In vsam at the cluster creation for KSDS FREESPACE parameter is required but for ESDS FREESPACE parameter is not required ?
What are the optional parameters to the input dataset While loading the empty cluster with the data records?
During processing of a VSAM file, some system error occurs and it is subsequently unusable . What do you do ?
is it required that primary key values have to be unique? Do alternate key values have to be unique?
What is a ci split? What is a ca split?
How to insert values for variables that are declared as COMP-3 variables in COBOL program in an already created VSAM file.
name the utility program closely associated with vsam?
What is the main purpose of having user catalog in vsam?
Explain the process in which flat files are converted into vsam files?
How many buffers are allotted to VSAM KSDS and ESDS?
COBOL 
