1 / 16

Introduction to Business Computing: Programming with COBOL and Data Processing

This course, taught by David Tucker and assisted by GTA Batul Mirza, provides an overview of computing in business, focusing on programming in COBOL. Students will learn about computer hardware, software, and essential processing types like batch and interactive methods. The curriculum covers business data processing, algorithms, and the structure of COBOL programs, including divisions, data organization, and logic implementation. By the end of the course, participants will understand how to handle data effectively and develop algorithms that solve business-related problems.

yelena
Download Presentation

Introduction to Business Computing: Programming with COBOL and Data Processing

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CS 1024 - Computing for Business Instructor: David Tucker GTA: Batul Mirza CS 1024

  2. Overview of the Course • Syllabus • Use of computers in business • Introduction to programming using COBOL CS 1024

  3. Brief Introduction to Computers • Computer hardware • PC & components • Mainframes • Computer software • Programs which cause a computer to carry out a task • Sequential instructions • Processes data • Examples • Data • Raw fact • Information • Organized and processed • Form that is meaningful CS 1024

  4. Types of Processing • Batch processing • Submit a job – wait – get results • Ex. Monthly payroll processing • Posting to general the ledger • Validation checks • Interactive processing • Interaction with a computer through a terminal • Personal computer CS 1024

  5. Business Data Processing • COBOL : common business oriented language • Characteristics of B.D.P. • Many large data files • Relatively few computations • Lots of reports • Typical tasks of B.D.P. • Rearrange data • Change data’s appearance • Compare data items • Locate items • Summarize • Tabulate • Combine data CS 1024

  6. Algorithm • A natural language statement of a systematic procedure for solving a problem. • Algorithm Characteristics • Must terminate • Have zero or more inputs • Have one or more outputs • Each step unambiguous CS 1024

  7. Examples of Algorithms • Add 2 numbers • Get num1 • Get num2 • Sum <- num1 + num2 • Write sum • Calculate Pay • Get rate of pay • Get hours worked • pay <- rate_of_pay * hours worked • Write pay CS 1024

  8. Languages • Machine • 0 & 1s only • Low-level • Assembly • Managing memory • High-level • COBOL, C, Pascal • Machine does the work of translating • Natural language • English • Spanish CS 1024

  9. COBOL Features • English-like • Self-documenting “sort of” • Data declaration “location” • File structure • Records • Fixed decimal data handling • Separates machine independent and machine dependant parts “Environment Division” CS 1024

  10. Data Organization • Data is composed of 3 types of characters • Digits or numeric characters (0,1,…9) • Letters or alphabetic characters (A,B,…Z) • Special characters (coma, decimal point, equal sign, space, etc.) • Field hold a piece of information • Alphanumeric field • Numeric field • Record • Related fields • File • Records that are used together CS 1024

  11. Programming Specifications • Program name • Narrative or additional info • Input File(s) • Input Record Layout • Fields in which location of the row • Data • Report Layout • Processing Requirement • File • Filtering • Printing CS 1024

  12. Logic • Write out the logic before you start coding • Pseudocode • Flow chart CS 1024

  13. Divisions of a COBOL Program • IDENTIFICATION DIVISION – provides basic information about the program such as a name • ENVIRONMENT DIVISION – Specifies the computer hardware that is to be used when the program is compiled and executed CS 1024

  14. Divisions Cont. • DATA DIVISION – defines the characteristics of the files, records, and fields to be used in the program. • File section • FD (file description) • SELECT statement • Level numbers • Relation to each other 01 – record description entry 05 – field entry • Record description • Working-storage section • Define data that does not appear in the input or output. CS 1024

  15. Divisions Cont. • PROCEDURE DIVISION – specifies the processing steps to be followed by the computer when the program is executed. • Paragraphs (procedures) • PERFORM statement • IF statement • READ statement • Test data CS 1024

  16. Elements of COBOL • Reserved words • Programmer-supplied names • Paragraph names • Data names • File names • Literals • Numeric • Non numeric • Symbols • Punctuation • Arithmetic • Relational • Level numbers • Pictures CS 1024

More Related