Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. SQL Processing Using File Input is a database facility invented by IBM for interfacing with their DB2 system. It is accessed from within TSO ISPF from the DB2I Primary Option menu. SPUFI allows direct input of SQL commands in the TSO environment, rather than having them embedded within a program. Although it is essentially an interactive tool, SPUFI operates using a pair of datasets. (A dataset on z/OS is equivalent to a file on other operating systems.) In the main SPUFI screen one specifies an input dataset and an output dataset; these can be specified once and then reused repeatedly. When the user moves on from the main screen, the standard ISPF editor is opened on the input dataset. At this point the user can enter the required SQL statements using the familiar editor. On exiting from the editor the main SPUFI screen reappears; when the user moves on this time the contents of the input dataset are executed.

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