1. UNIT 1 UNIT 1 Stephen S. Linkin Houston Community College System 8/28/2007 1 Copywrite © Houston Community College System 2007 Graphics Courtesy of IBM. And Course Technologies (Shelly and Cashman)

2.  Advantages of COBOL  Disadvantages of COBOL 8/28/2007 2

3.  Stream input/output vs. record input/output  Blocking Records 8/28/2007 3

4.  Step 1 - Understand the problem  Step 2 - Design the program  Step 3 - Code the program  Step 4 - Test the program  Step 5 - Document the program 8/28/2007 4

5. SEQUENCE  Top-down design/top-down programming  Divisions of a COBOL program ◦ IDENTIFICATION DIVISION ◦ ENVIRONMENT DIVISION ◦ DATA DIVISION ◦ PROCEDURE DIVISION 8/28/2007 5 SELECT CASE ITERATION

6. 8/28/2007 6 Copywrite Houston Community College System 2007

7. 8/28/2007 7 Copywrite Houston Community College System 2007

8.  A case study 8/28/2007 8 Copywrite Houston Community College System 2007

9.  Hierarchy charts  Pseudocode  Flowcharts 8/28/2007 9 Copywrite Houston Community College System 2007

10.  PROGRAM-ID  AUTHOR, INSTALLATION, DATE-WRITTEN, and DATE-COMPILED  Comment box  Format notation 8/28/2007 10 Copywrite Houston Community College System 2007

11.  SELECT statements 8/28/2007 11 Copywrite Houston Community College System 2007

12.  FILE SECTION  FD level indicator ◦ Level numbers  Picture clauses  WORKING-STORAGE SECTION  SWITCHES  ACCUMULATORS  Work area fields 8/28/2007 12 Copywrite Houston Community College System 2007

13.  MAIN-PROGRAM  Initialization  Process-file  Process-record  Heading routine  Wrap-up 8/28/2007 13 Copywrite Houston Community College System 2007

14.  Designing the Inventory Vendor Report ◦ Inventory Vendor Report ◦ Hierarchy chart ◦ Program flowchart ◦ Inventory File record layout ◦ Inventory Vendor Report program 8/28/2007 14 Copywrite Houston Community College System 2007

15.  CONFIGURATION SECTION  SPECIAL NAMES  INPUT-OUTPUT SECTION 8/28/2007 15 Copywrite Houston Community College System 2007

16.  Data categories ◦ Alphabetic (Text) ◦ Alphanumeric (Mixed) ◦ Numeric ◦ Alphanumeric Edited ◦ Numeric Edited 8/28/2007 16 Copywrite Houston Community College System 2007

17.  Floating dollar signs  Plus sign  Minus sign  Credit symbol and debit symbol  Blank, zero, and slash  BLANK WHEN ZERO clause  JUSTIFIED RIGHT clause  Scaling — P symbol 8/28/2007 17 Copywrite Houston Community College System 2007

18.  COBOL Field names must be unique  Qualified Names (Implied Duplication) 8/28/2007 18 Copywrite Houston Community College System 2007

19. 8/28/2007 19 Copywrite Houston Community College System 2007

20. 8/28/2007 20 Copywrite Houston Community College System 2007

21. 8/28/2007 Copywrite Houston Community College System 200721