Tech-Reader.blog

    Fixing a Bug in a COBOL Program Bug Overview A COBOL program responsible for calculating and displaying a Total Price for customer orders contained a bug. The calculation logic was incorrect, causing the Total Price to display a value of 0.00 under certain conditions. This article documents the problem, the root cause, and the implemented fix. Original Buggy Code The bug was traced to a missing initialization of the TOTAL-PRICE field and an incorrect placement of the computation logic. 01 ORDER-DETAILS.     05 QUANTITY      PIC 9(3).     05 UNIT-PRICE    PIC 9(5)V99.     05 TOTAL-PRICE   PIC 9(7)V99.  ... DISPLAY "Order Information". DISPLAY "Quantity    : " QUANTITY. DISPLAY "Unit Price  : " UNIT-PRICE. DISPLAY "Total Price : " TOTAL-PRICE. Problem: TOTAL-PRICE was displayed without being computed. No computation logic was included to multiply QUANTITY by UNIT-PRICE . Fixed...

  Using COBOL to Add An Email Address Field to the Customer Information Screen Enhancement Overview In this enhancement, a new Email Address field is added to the Customer Information Screen . This feature allows users to store and view customer email addresses directly in the system, improving communication and accessibility. This enhancement involves modifying the screen layout, updating the COBOL program, and ensuring the database structure supports the new field. Screen Layout The updated Customer Information Screen : Customer Information Screen   --------------------------- Customer ID  : 54321 Name         : Jane Smith Address      : 456 Oak Street City         : Metropolis State        : NY Zip Code     : 10001 Phone        : 555 -987 -6543 Email        : jane.smith@example.com -------------------------...

System-Level Documentation: Sales Summary Report Overview The  Sales Summary Report  provides a detailed overview of customer sales within a specific date range. It is designed to help managers and executives track revenue performance and identify top-performing customers. This report is automatically generated and can be customized based on the selected time period. This document describes the report layout, field definitions, and the COBOL program that supports its generation. Report Layout Here’s how the report appears when printed or displayed: Sales Summary Report ---------------------   Date Range  : 11/01/2024 - 11/15/2024 Generated By: System Customer ID  Customer Name Total Sales ------------ ------------- ----------- 54321        Jane Smith    $1,250.00 12345        John Doe      $980.00 78901        Mary Johnson  $450.00 Gran...

System-Level Documentation: Inventory Management Screen Overview The Inventory Management Screen is a vital tool for monitoring product stock levels and managing inventory effectively. It provides a snapshot of key inventory metrics, such as stock levels, reorder thresholds, and supplier information. This screen helps users make timely decisions about restocking and ensures smooth supply chain operations. This document provides a breakdown of the screen’s structure, field definitions, and the COBOL program that supports it. While primarily for developers, the content is designed to be accessible to IT executives and business decision-makers. Screen Layout Here’s how the screen appears in a typical 3270 terminal emulator: Inventory Management Screen --------------------------- Product Code  : PROD123 Description   : Wireless Headphones Category      : Electronics Stock Level   : 150 Reorder Level : 50 Supplier Code : SUPP456 ------------------...

System-Level Documentation: Order Entry Screen Overview The Order Entry Screen is a core component of the order management system, allowing users to create and manage customer orders efficiently. This screen captures critical details, such as order information, customer data, and product details, ensuring accurate order processing and fulfillment. This document outlines the screen’s structure, individual fields, and the COBOL code required to display and support its functionality. It is tailored for developers, while remaining accessible to IT executives and decision-makers. Screen Layout Here’s the design as displayed in a typical 3270 terminal emulator: Order Entry Screen ---------------------------   Order ID : 98765 Customer ID : 54321 Order Date : 11 / 17 / 2024 Product Code : PROD123 Quantity : 10 Unit Price : $25 .00 Total Price : $250 .00 Shipping Date : 11 / 20 / 2024 --------------------------- Key Features : Dynami...

System-Level Documentation: Customer Information Screen Overview The Customer Information Screen is a critical component of the customer management system, providing a centralized view of key customer details. This screen allows users to view, update, and verify customer information such as name, address, phone number, and email. Designed for ease of use, it ensures that both IT personnel and business users can interact with customer data efficiently. This document outlines the screen’s structure, its individual fields, and the COBOL code supporting its functionality. While this is primarily for developers maintaining or enhancing the system, the content is crafted to be accessible for IT executives and C-level stakeholders. Screen Layout Here’s the current design as seen in a 3270 terminal emulator: Customer Information Screen ---------------------------   Customer ID :    54321 Name        :    Jane Smith Address     : ...