This chapter includes examples of each WhereScape RED Callable Routine to illustrate how to invoke the routine for each RDBMS along with the necessary variable declarations. Typically, the routines are executed from a Stored Procedure so the routinespecific examples illustrate that scenario and use parameters/arguments that are passed by position (as in a REDgenerated procedure). However, it can be useful to execute a Callable Routine using other methods such as the following.