To make the connection from a program to a data set in which you want to store output, issue the ALLOCATE command, the FILE operand, and other operands that establish the attributes you want for the data set. When you issue the ALLOCATE command to connect a data set to a program, you establish whether it is an input data set or an output data set by the ddname you specify.

For information about the operands used to connect to an existing data set, see Accessing an Existing Data Set. For information about the operands used to connect to a new data set, see Creating a New Data Set.