Transcript Lecture # 1
Azmat Bhatti [email protected] Two Mid-Term tests (40%) Two Assignments (30%) One Final Exam (30%) Traditional Structured Programming & Design Techniques. Transactional Processing How to use our DB2 skills learned in IBC233 Learn some COBOL syntax! ◦ Maintain Legacy systems IPC144 ◦ Transaction processing ◦ Arrays IBC233 ◦ Interactive screens OPS400 ◦ iSeries IBM AS/4000 System IBM Midrange Computer zeus.senecac.on.ca History of AS/400 1983 - 1994 System 3 1969 - 1985 System 32 1975 - 1984 System 34 1977 - 1985 System 36 System 38 1980 - 1994 AS/400 1988 - present iSeries 2000 - present system i 2005 - 2006 i 2007 Power Systems 2008 IBM i 2014 IBM iSeries AS/400 Overview MATRIX ZEUS (Power Systems) PCs in the Lab Fire Wall PCs at Home Telnet doesn’t work - doesn’t support system i Function Keys Rational Developer (RDI) Client Access (Available from CS Students Download site at Seneca) Mochasoft (at home) ◦ Available for download from the CS site. ◦ Select Software for Windows ‘95 and look for MOCHA ◦ Or from http://mochasoft.dk/ 30 days trial version. Uninstall and download again after 30 days or pay for the full version. Facts about ibm i Operating System (OS/400, i5/OS) Object-Based Everything that takes up space and has a description is an object Types of Objects include: – – – User Profiles Job Queues Files Programs Traditional ibm i Data Storage Hierarchy Library Objects Members contain data Files only Traditional IBM i Data Storage Hierarchy Azmat - *LIB BAC344LIB - *LIB Object1 *PGM QCBLLESRC *FILE PGM1 Object2 *OUTQ Object3 *FILE Object4 *JOBQ OPS400 - *LIB OPS400 *OUTQ PGM2 QCBLLESRC *FILE PGM3 PG1 PGM1 *PGM PG2 PGM3 *PGM PG1 *PGM Library Lists • Each job has an attached Library List • Different Types of Libraries: – System: IBM Supplied – Product: Added automatically when an IBM product is used – Current: Defined by an individual user ID User ID’s default Library – User: Non-IBM Supplied Libraries Created by Business to organize programs, files, etc. Object used to organize data storage. Are different for each student. Get set back to your “default” when you signoff. IBM i finds Objects • Qualified Names Library/Object BAC344LIB/QCBLLESRC • Using Library Lists! How are Library Lists sequenced? System vs Subsystem • System = ZEUS • Subsystem is a logical grouping of resources such as QINTER, QBATCH etc etc. IBM DB2/400 on the IBM i PF PF PF PF holds data consists of record format consists of file/field definitions may hold KEY fields LF is a view to a selection of subset of data LF does not hold any data LF has KEY fields defined with Ascending or Descending or other options Control Language CL Syntax Command-name (space) parameter Keyword vs Positional Notation Keyword WRKOUTQ OUTQ(PRT01) CRTLIB LIB(STUDENT1) + TEXT(‘Student1 Library’) Positional WRKOUTQ PRT01 CRTLIB STUDENT1 *PROD ‘Student1 Library’ Naming of Commands • Based on English! • Combination of Verb and Noun CRTLIB Create Library Use Menus to find the command Use F11 and Help to find the Syntax STRPDM Look at SEU Week 1 - 2nd Lecture Intro to COBOL Programming Defining Files and Processing Data How does a compiler work? Creating a COBOL Program Parts of a COBOL Program The Perform Statement Defining Files Defining Variables COBOL Verbs Translate programs written by humans into Machine Language Code. Source Code QCBLLESRC (PGM1) Compiled Listing (PGM1) COBOL Compiler Program Object (PGM1) 1. Create a Source Physical File - QCBLLESRC 2. Create a Source Member in the Source Physical file with the type CBLLE 3. Type in the COBOL code using SEU 4. Exit & Save 5. Compile Designed by the US defense department Meant to be English like for ease of maintenance COmmon Business Oriented Language Identification Division Environment Division Data Division Procedure Division (See Page 51 of your text) IDENTIFICATION DIVISION. PROGRAM-ID. program-name. [AUTHOR. [comment-entry] … ] [INSTALLATION. [comment-entry] …] [DATE-WRITTEN. [comment-entry] …] [DATE-COMPILED. [comment-entry] …] [SECURITY. [comment-entry] …] Required ◦ Name of the Program in the Program-ID paragraph. Optional ◦ ◦ ◦ ◦ Author Installation Date-Written etc. [ENVIRONMENT DIVISION.] [CONFIGURATION SECTION.] [SOURCE-COMPUTER. AS/400.] [OBJECT-COMPUTER. AS/400.] [INPUT-OUTPUT SECTION.] [FILE-CONTROL.] [SELECT nice-file-name ASSIGN to DISK/PRINTER/WORKSTATIONphysical-file-name.] INPUT-OUTPUT SECTION is only required if your program uses files. ◦ Contains the FILE-CONTROL paragraph DISK PRINTER DATABASE WORKSTATION FORMATFILE ◦ similar to setting up file pointers Select Product-File Assign to disk-PRODPF. Select Product-file Assign to database-PRODPF Access is Sequential. Select Display-File assign to workstation-PRDSPF organization is transaction. Select Display-File assign to workstation-PRDSPF-SI organization is transaction. Select Product-Report assign to printer-qprint. Select Product-Report assign to printer-qsysprt. Select Product-Report assign to formatfile-qsysprt.