In addition to the input data source, Teradata FastLoad accesses four different data sets/files or input/output devices. The following table lists the FastLoad data sets/files and input/output devices.
| Data Set/File or Device | Provides |
|---|---|
| standard input | Teradata FastLoad commands and Teradata SQL statements that make up a Teradata FastLoad job |
| standard output | Destination for Teradata FastLoad output responses and messages |
| standard error | Destination for Teradata FastLoad error messages |
| configuration | Optional specification of Teradata FastLoad utility default values |
When running Teradata FastLoad in interactive mode, the terminal keyboard functions as the standard input device and the display screen is the standard output/error device.
When running Teradata FastLoad in batch mode, a data set or file name must be specified for each of these functions. The method of doing this varies, depending on the configuration of your client system:
- On workstation-attached client systems, use the standard redirection mechanism (recommended approach) to specify the Teradata FastLoad script files when invoking the utility. Teradata FastLoad script files can also be piped to Teradata FastLoad when invoking the utility.
- On mainframe-attached client systems, use standard z/OS JCL control commands to allocate and create the Teradata FastLoad data sets or files before invoking the utility.