This chapter describes the following BTEQ fundamentals: Providing Teradata SQL Requests Using Comments in a BTEQ Session UNIX Signals Using Scripts, Run Files, Macros, and Stored Procedures Testing and Branching Using the REPEAT Command Discarding Input and Aborting Requests Entering Operating System Commands from a BTEQ Session Handling Errors I/O Errors and Abends BTEQ Large File (LF) Support OS Limitations