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IBC233 Week 2 Updated Fall 2011

This homework assignment covers topics such as identifying servers, understanding library lists, and learning about programming languages on the IBM i system.

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IBC233 Week 2 Updated Fall 2011

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  1. IBC233 Week 2 Updated Fall 2011

  2. Homework? • Finish Lab 1 – Due Today! Send me an email with your userid when you are done! • Download and install software

  3. Agenda • Review • Name that Server? • System Values • What’s ZEUS doing? • Library List • RDp • Physical Files

  4. Review • Where will you find course notes? • Where will you find schedules, labs and assignments? • What is Client Access? • Where do you get software for free? • What does CL stand for? • What’s the benefit of using the Wiki?

  5. Name that Server?

  6. Definitions

  7. System Values vs User Profile • System Values configures ZEUS for everyone. • User Profile customizes ZEUS’s configuration for an individual

  8. What’s ZEUS Doing? • WoRK with ACTive JOBs • System vs Subsystem • Effects of an infinite loop

  9. How the system i finds Objects • When an object is created, it is created ‘in’ a particular library. • To access an object, the iSeries needs to know what library the object is in. • (CL) Commands prompt you for the object name and library name. • *LIBL is the default for library

  10. Library Lists • The list of Libraries through which the iSeries searches to find objects. • Similar to the DOS ‘Path’ concept • Each Job has a library list • *LIBL = library list

  11. Library Lists cont’d • A Library List consists of 4 parts: • System Libraries (up to 15) • Product Libraries (none, 1 or 2) • Current Library(1 only) • User Library ( up to 25) • To view your library list - DSPLIBL

  12. How do Libraries get on your Library List? • When you sign on, your library list is built from: • QSYSLIBL (system value) • QUSRLIBL (system value) • Current library from User Profile • Product libraries are added as needed by the system

  13. Storing Objects • When an object is created, it is stored in the library specified. • If no library is specified, it is stored in *CURLIB (current library). • If there is no current library, it is stored in QGPL library. • Exception: Library Descriptions, Device Descriptions and User Profiles are always stored in library QSYS.

  14. Languages that we’ll be Learning • CL (Control Language) • How we communicate with the operating system • Similar idea to Unix Schell • RPG (Report Program Generator) • How we access the database • C does the same thing • DDS (Data Description Specifications) • How we define the Database • CMD – The language we use to write commands

  15. Steps to Writing a CL Program

  16. Writing a program *OUTQ WRKSPLF Compiled Listing (PGM1) Source Code QCLLESRC *FILE (PGM1) CL Compiler PGM1 *PGM Successfully Completed *MSGQ DSPMSG

  17. What does RPG Stand for?

  18. Steps to Writing a RPG Program

  19. RDp Rational Developer for Power Systems • Based on Eclipse Technology • part of IBM’s suite of products designed to enhance programmer’s productivity • PC version of PDM

  20. What does DDS Stand for?

  21. Steps to Writing a DDS Program

  22. DB2 – the database • Objects created using either DDS coded programs • Or SQL

  23. DDS – Physical File Demo

  24. Homework? • Finish Lab 1

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