Customer Inquiry using CICS
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This example uses a suite of COBOL programs and BMS map sets to display the contents of a user requested record from the Customer Master File. The transaction identifier (or Tran ID) for this menu option is "CUD1" and the program is "CUDUMP".
The information is displayed in a hexadecimal (or DUMP) format. This transaction is provided as a tool for programmers and support personnel. The programs use command level CICS statements to access the VSAM Master File and display information to a 3270 terminal or terminal emulator. The programs run on an IBM Mainframe System with CICS or a Microsoft Windows System with Micro Focus Server for Mainframe Migration.
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When the Hex-dump utility program is first executed a screen with the prompt for a customer number and record position is displayed. The user should type a customer number. If the record position is not entered it will default to position 1.
CUDUMP1 Data Base Management System 2007/11/11 STOA Customer File Dump Option 20:30:00:00 Enter the Record Key: _ Position within Record: Position Hex..... ........ ........ ........ ebcdic.......... ascii........... ... ... PF3-End Session
When the user presses the "Enter" key the program will get the requested record and re-display the screen with the first 256 bytes of the customer record starting in position one (1). If the requested customer cannot be found an error message is posted to the screen. The user may enter another customer number or change the starting position.
CUDUMP1 Data Base Management System 2007/11/11 STOA Customer File Dump Option 20:30:00:00 Enter the Record Key: 000000001900 Position within Record: 00000001 Position Hex..... ........ ........ ........ ebcdic.......... ascii........... 00000001 30303030 30303030 31393030 20536D69 .............._. 000000001900 Smi 00000017 74682020 20202020 20202020 20202020 ................ th 00000033 20202020 20202020 2053616D 6D792020 ........../__`.. Sammy 00000049 20202020 20202020 20202020 20202020 ................ 00000065 20202020 20202020 20202020 20202020 ................ 00000081 20313931 39204361 726E6F75 73746965 ......./.>?..... 1919 Carnoustie 00000097 20447269 76652020 20202020 20202020 ................ Drive 00000113 20202020 20202020 20202020 20202020 ................ 00000129 20202020 20202020 20202020 20202020 ................ 00000145 20202020 20202020 20202020 20202020 ................ 00000161 20202020 20202020 20202020 20202020 ................ 00000177 20202020 20202020 20202020 20202020 ................ 00000193 20202020 20202020 20202020 20202020 ................ 00000209 20202020 20202020 20202020 20202020 ................ 00000225 20202020 20202020 20202020 20202020 ................ 00000241 20202020 20202020 20202020 20202020 ................ PF3-End Session
The Customer Master File is a VSAM, Key-Sequenced-Data-Set (KSDS). The length of the records in the data set is 512 bytes. The key field starts in position one (1) and is 12 bytes in length. The following is the COBOL copy file that defines the record layout.
The purpose of this suite of program is to provide examples that use command level CICS in COBOL programs to access VSAM, Key-Sequenced-Data-Sets (KSDS) and display the information using standard BMS screen definitions to a 3270 terminal or terminal emulator.
A hexadecimal dump format is used to display 256 byte blocks of data based on a user specified starting position in the record. This document may be used to assist as a tutorial for new programmers or as a quick reference for experienced programmers.
In the world of programming there are many ways to solve a problem. This documentation and software were developed and tested on systems that are configured for a SIMOTIME environment based on the hardware, operating systems, user requirements and security requirements. Therefore, adjustments may be needed to execute the jobs and programs when transferred to a system of a different architecture or configuration.
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This section includes links to documents with additional information that are beyond the scope and purpose of this document. The first sub-section requires an internet connection, the second sub-section references locally available documents.
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Note: The latest versions of the SimoTime Documents and Program Suites are available on the Internet and may be accessed using the icon. If a user has a SimoTime Enterprise License the Documents and Program Suites may be available on a local server and accessed using the icon.
Explore the CICS Connection for more examples of mainframe CICS coding techniques and sample code.
Explore the COBOL Connection for more examples of COBOL programming techniques and sample code.
Explore the non-Relational Data Connection for more examples of accessing methodologies and coding techniques for Data Files and VSAM Data Sets.
Explore An Enterprise System Model that describes and demonstrates how Applications that were running on a Mainframe System and non-relational data that was located on the Mainframe System were copied and deployed in a Microsoft Windows environment with Micro Focus Enterprise Server.
Explore The ASCII and EBCDIC Translation Tables. These tables are provided for individuals that need to better understand the bit structures and differences of the encoding formats.
Explore The File Status Return Codes to interpret the results of accessing VSAM data sets and/or QSAM files.
The following links will require an internet connect.
This suite of programs and documentation is available to download for review and evaluation purposes. Other uses will require a SimoTime Software License. Link to an Evaluation zPAK Option that includes the program members, documentation and control files.
A good place to start is The SimoTime Home Page for access to white papers, program examples and product information. This link requires an Internet Connection
Explore The Micro Focus Web Site for more information about products (including Micro Focus COBOL) and services available from Micro Focus. This link requires an Internet Connection.
Explore the Glossary of Terms for a list of terms and definitions used in this suite of documents and white papers.
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|Hexadecimal View using CICS for Customer Inquiry|
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All Rights Reserved
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