S) How to read different dml file to a single file ?
use red ef ine format or use read_multi ple file
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S) How to take a count of vowel present in a string ?
Solution: Redefine Format record string( 1) data; end FBE data member [ vector "A","a","E","e","I"," i "," O","o","U","u " ] Sort Key –Data Rollup Key –Data out : : rollup(in) = begin out. data : : in.data ; out.cc : : count( in.data ); end;