Command task can be called as the pre or post session shell command for a session task. One can run it as pre-session command r post session success command or post session failure command.
Aggregator transformations are handled in chunks of instructions during each run. It stores transitional values which are found in local buffer memory. Aggregators provides extra cache files for storing the transformation values if extra memory is required.
During session runs, the files created are namely Errors log, Bad file, Workflow low and session log.
Repository server controls the complete repository which includes tables, charts, and various procedures etc. Its main function is to assure the repository integrity and consistency. While a powerhouse server governs the implementation of various processes among the factors of server’s database repository.