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WE HAVE 5 DIFFERENT RECORDING MODE IN COBOL.FIXED,
FIXEDBLOCK, VARIABLE, VARIABLEBLOCK AND UNDEFINED.
WHAT IS THE DIFFERENCE AMONG ALL AND WHICH TYPE OF FORMAT
SHOULD BE USED WHEN
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Answer Posted / vijay
Hi as you specified we have five types of record formats
when u know exactly the length of record lay out then you
can specify fixed or fixed block.Then system will allocate
the fixed lenth for the record. when u enter data it takes
exactly fixed lenth as u specified, if u give data less
than the length specified also then system will allocate
the fixed lenth only . Memory will be wasted.
When you are not sure of record format i:e if u specify the
length of a record is x(156) , then record may be of 156
or it may be less than that.
more record length it wount accept,
same record lenth as specified accept ,
record which is of less than specified size accept.
here memory wount be wasted.System will allocate memory
based on record data u supply.
undefined format we usually use for load libs. we are not
sure how long the data will be. then we will specify
undefined.
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