Access to Relational Data Tables
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Menu for RDBMS Options Access to Relational Data Tables |
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Introduction
Relational Data Base Management Systems (RDBMS) are quite popular as the data storage and retrieval methodology used in an online (or transaction oriented) environment.
This example uses a suite of COBOL programs and BMS mapsets to execute programs that will provide relational data base inquiry or update functionality for a Customer Table. The programs use embedded EXEC SQL statements to access the Customer Table and display information to a 3270 terminal or terminal emulator. The programs originally ran on an IBM Mainframe System with CICS and DB/2. The programs now run on a Microsoft Windows System with SQL Server and Micro Focus Server, Enterprise Edition.
We have made a significant effort to ensure the documents and software technologies are correct and accurate. We reserve the right to make changes without notice at any time. The function delivered in this version is based upon the enhancement requests from a specific group of users. The intent is to provide changes as the need arises and in a timeframe that is dependent upon the availability of resources.
Copyright © 1987-2025
SimoTime Technologies and Services
All Rights Reserved
Menu Options, Relational Data Base
The menu provides links to the relational data base inquiry and update programs for the Customer Table. The transaction identifier (or Tran ID) to display the menu is "AMSQ" and the program is "MN1SQL". The following shows the main menu screen.
MN1SQL1 Relational Data Base Management 2011/11/15
STOA Menu of Options 15:03:28:38
Version 01.00
1. Customer Table View and Update, Master SQL Data Base
2. Customer Table View and Update, Secondary SQL Data Base
3. Update Master from Secondary, Non-Terminal Transaction
4. Reserved for Future Use
5. Reserved for Future Use
6. Reserved for Future Use
7. Reserved for Future Use
8. Return to Main Menu
9. End of Job, Sign Off
_ Select an option, please
PF12=Esc |
The following sections provide a brief description of the transaction definitions associated with the Menu options.
1. Update Relational Customer Table
The transaction identifier (or Tran ID) for this menu option is "CQU1" and the program is "CQ2UPD". This program will prompt a user for the customer number. Once a customer number is entered the program accesses the Customer Table (Relational Data Table) and displays the customer information at the 3270 Terminal. A user may update the existing row, insert a new row, continue to enter customer numbers or exit the program.
For additional information refer to the Customer Relational Data Base Inquiry and Update Program that is provided as a separate document.
8. Return to Main Menu
The transaction identifier (or Tran ID) for this menu option is "MM01" and the program is "MN1APP". This program will display the Main Menu at the 3270 Terminal. For additional information refer to the Main Menu Screen or primary menu.
9. End of Job, Sign Off
This will end the application and display the CICS transaction screen.
Technical Details
This section provides additional detail about the menu programs.
Source Code, COBOL Menu Program
The following (MN1SQL.cbl) is the source code for the Main Menu Program.
IDENTIFICATION DIVISION.
PROGRAM-ID. MN1SQL.
AUTHOR. SIMOTIME TECHNOLOGIES.
*****************************************************************
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* granted, provided the SimoTime copyright notice appear on all *
* copies of the software. The SimoTime name or Logo may not be *
* used in any advertising or publicity pertaining to the use *
* of the software without the written permission of SimoTime *
* Technologies. *
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* Permission to use, copy, modify and distribute this software *
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* license will be granted for use within an enterprise, *
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*****************************************************************
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*****************************************************************
* PROGRAM DESCRIPTION
* -------------------
* This is the Menu program for the File Management System.
*
* MAINTENANCE
* -----------
* 1989/02/27 Simmons, Created program.
* 1997/03/17 Simmons, Updated for SYSID.
*
*****************************************************************
*
ENVIRONMENT DIVISION.
*****************************************************************
DATA DIVISION.
WORKING-STORAGE SECTION.
01 EOJ pic X(50)
value ' - Session completed, Enter new Tran ID '.
01 XCTL-RESP-CODE pic 9(08) comp.
01 LOCAL-TRAN-ID pic X(4) value 'AMSQ'.
01 MSG-LINES.
03 MSG-DATA pic X(78) value SPACES.
01 SYS-ID pic X(4).
01 WORK-DATE.
05 WORK-DATE-CC pic X(02).
05 WORK-DATE-YY pic 9(02).
05 WORK-DATE-MM pic X(02).
05 WORK-DATE-DD pic 9(02).
01 WORK-TIME.
05 WORK-TIME-HH pic X(02).
05 WORK-TIME-NN pic X(02).
05 WORK-TIME-SS pic X(02).
05 WORK-TIME-TT pic X(02).
01 PROGRAM-NAME pic x(8).
01 WS-RESPONSE pic S9(8) comp.
01 WS-REASON-CODE pic S9(8) comp.
01 PROGRAM-FLAGS.
05 P-FLAG-ANIM pic X value 'N'.
05 P-FLAG-JOURNAL pic X value 'Y'.
COPY MN1SQL1.
COPY DFHAID.
*****************************************************************
LINKAGE SECTION.
01 DFHCOMMAREA pic X.
*****************************************************************
PROCEDURE DIVISION.
* if P-FLAG-ANIM = 'Y'
* CALL 'CBL_DEBUGBREAK'
* end-if
perform CLEAR-MESSAGES
evaluate TRUE
when EIBCALEN = ZERO
perform SEND-MENU-SCREEN
when EIBAID = DFHPF12
perform END-OF-PROGRAM
when EIBAID = DFHENTER
perform GET-OPTION-NUMBER
when other
move 'Please use a valid option number' to MSG-LINES
perform RECOVERY-ROUTINE
end-evaluate.
* Should never get to here...
perform END-OF-PROGRAM.
*****************************************************************
BUILD-HEADER-INFO.
EXEC CICS ASSIGN
SYSID(SYS-ID)
END-EXEC.
move 'MN1SQL1 ' to SYSPAGEO
move SYS-ID to SYS-IDO.
perform Z-GET-DATE-AND-TIME.
move SPACE to OPTNUMO
exit.
*****************************************************************
CLEAR-MESSAGES.
move SPACES to MSG-LINES
move SPACES to SYSMSG1O
exit.
*****************************************************************
END-OF-PROGRAM.
EXEC CICS SEND
FROM (EOJ)
LENGTH (50)
ERASE
END-EXEC
EXEC CICS SEND
CONTROL FREEKB
END-EXEC
EXEC CICS RETURN
END-EXEC
exit.
*****************************************************************
GET-OPTION-NUMBER.
EXEC CICS RECEIVE
MAP ('MN1SQL1')
MAPSET ('MN1SQL1')
RESP(WS-RESPONSE)
RESP2(WS-REASON-CODE)
END-EXEC.
evaluate OPTNUMI
when '1' move 'CQ2UPD ' to PROGRAM-NAME
perform TRANSFER-CONTROL
when '2' move 'CQHOLD ' to PROGRAM-NAME
perform TRANSFER-CONTROL
when '3' perform START-A-TRANSACTION
when '8' move 'MN1APP ' to PROGRAM-NAME
perform TRANSFER-CONTROL
when '9' perform END-OF-PROGRAM
when other
move 'Please use a valid option number' to MSG-LINES
perform RECOVERY-ROUTINE
end-evaluate.
* Should never get to here...
exit.
*****************************************************************
RECOVERY-ROUTINE.
move MSG-LINES to SYSMSG1O.
move -1 to OPTNUML
perform SEND-MENU-SCREEN
exit.
*****************************************************************
SEND-MENU-SCREEN.
perform BUILD-HEADER-INFO
EXEC CICS SEND
MAP ('MN1SQL1')
MAPSET ('MN1SQL1')
ERASE
END-EXEC
move LOW-VALUES to MN1SQL1O
EXEC CICS RETURN
TRANSID (LOCAL-TRAN-ID)
COMMAREA (MN1SQL1O)
LENGTH (32)
END-EXEC.
* Should never get to here...
exit.
*****************************************************************
START-A-TRANSACTION.
EXEC CICS START
TRANSID('CQP1')
END-EXEC.
* Should never get to here...
move 'Program not found, &&&&&&&&' to MSG-LINES.
inspect MSG-LINES replacing first '&&&&&&&&'
by PROGRAM-NAME
move -1 to OPTNUML.
perform RECOVERY-ROUTINE.
exit.
*****************************************************************
TRANSFER-CONTROL.
EXEC CICS XCTL
PROGRAM(PROGRAM-NAME)
RESP(XCTL-RESP-CODE)
END-EXEC.
* Should never get to here...
move 'Program not found, &&&&&&&&' to MSG-LINES.
inspect MSG-LINES replacing first '&&&&&&&&'
by PROGRAM-NAME
move -1 to OPTNUML.
perform RECOVERY-ROUTINE.
exit.
*****************************************************************
Z-GET-DATE-AND-TIME.
accept WORK-DATE from DATE YYYYMMDD
accept WORK-TIME from TIME
move 'ccyy/mm/dd' to SYSDATEO
move WORK-DATE(1:4) to SYSDATEO(1:4)
move WORK-DATE(5:2) to SYSDATEO(6:2)
move WORK-DATE(7:2) to SYSDATEO(9:2)
move 'hh:mm:ss:dd' to SYSTIMEO
move WORK-TIME(1:2) to SYSTIMEO(1:2)
move WORK-TIME(3:2) to SYSTIMEO(4:2)
move WORK-TIME(5:2) to SYSTIMEO(7:2)
move WORK-TIME(7:2) to SYSTIMEO(10:2)
exit.
Source Code, BMS Screen
The following (MN1SQL1.bms) is the source code for the BMS screen.
***********************************************************************
* This BMS Member is provided by SimoTime Technologies *
* (C) Copyright 1987-2019 All Rights Reserved *
* Web Site URL: http://www.simotime.com *
* e-mail: helpdesk@simotime.com *
***********************************************************************
MN1SQL1 DFHMSD CTRL=(FREEKB), -
LANG=COBOL, -
MODE=INOUT, -
STORAGE=AUTO, -
TERM=3270, -
TIOAPFX=YES, -
TYPE=&&SYSPARM
*
MN1SQL1 DFHMDI SIZE=(24,80), -
TIOAPFX=YES
SYSPAGE DFHMDF ATTRB=(FSET,NORM,PROT), -
LENGTH=8, -
POS=(1,1), -
INITIAL='MN1SQL1 '
DFHMDF LENGTH=0, -
POS=(1,10)
DFHMDF ATTRB=(ASKIP,BRT), -
LENGTH=31, -
POS=(1,25), -
INITIAL='Relational Data Base Management'
* UPDATE-MAP-DATE
SYSDATE DFHMDF ATTRB=(NORM,PROT), -
LENGTH=10, -
POS=(1,69)
SYS-ID DFHMDF ATTRB=(BRT,PROT), -
LENGTH=4, -
POS=(2,1)
DFHMDF ATTRB=(ASKIP,BRT), -
LENGTH=15, -
POS=(2,32), -
INITIAL='Menu of Options'
* UPDATE-MAP-TIME
SYSTIME DFHMDF ATTRB=(NORM,PROT), -
LENGTH=11, -
POS=(2,68)
DFHMDF ATTRB=(ASKIP,BRT), -
LENGTH=13, -
POS=(3,33), -
INITIAL='Version 01.00'
DFHMDF ATTRB=(ASKIP,BRT), -
LENGTH=55, -
POS=(6,15), -
INITIAL='1. Customer Table View and Update, Master SQL D-
ata Base'
DFHMDF ATTRB=(ASKIP,BRT), -
LENGTH=58, -
POS=(7,15), -
INITIAL='2. Customer Table View and Update, Secondary SQ-
L Data Base'
DFHMDF ATTRB=(ASKIP,BRT), -
LENGTH=57, -
POS=(8,15), -
INITIAL='3. Update Master from Secondary, Non-Terminal T-
ransaction'
DFHMDF ATTRB=(ASKIP,BRT), -
LENGTH=26, -
POS=(9,15), -
INITIAL='4. Reserved for Future Use'
DFHMDF ATTRB=(ASKIP,BRT), -
LENGTH=26, -
POS=(10,15), -
INITIAL='5. Reserved for Future Use'
DFHMDF ATTRB=(ASKIP,BRT), -
LENGTH=26, -
POS=(11,15), -
INITIAL='6. Reserved for Future Use'
DFHMDF ATTRB=(ASKIP,BRT), -
LENGTH=26, -
POS=(12,15), -
INITIAL='7. Reserved for Future Use'
DFHMDF ATTRB=(ASKIP,BRT), -
LENGTH=37, -
POS=(13,15), -
INITIAL='8. Return to Main Menu, TRANSID(MM01)'
DFHMDF ATTRB=(ASKIP,BRT), -
LENGTH=23, -
POS=(14,15), -
INITIAL='9. End of Job, Sign Off'
OPTNUM DFHMDF ATTRB=(BRT,IC,UNPROT), -
LENGTH=1, -
POS=(16,15)
DFHMDF LENGTH=25, -
POS=(16,17), -
INITIAL=' Select an option, please'
* UPDATE-ERROR-MESSAGE
SYSMSG1 DFHMDF ATTRB=(BRT,PROT), -
LENGTH=78, -
POS=(21,1)
DFHMDF LENGTH=8, -
POS=(23,71), -
INITIAL='PF12=Esc'
DFHMSD TYPE=FINAL
END
Summary
The purpose of this suite of programs is to provide examples that use command level CICS in COBOL programs to access a Customer Master File that is a VSAM, Key-Sequenced-Data-Sets (KSDS) and display the information using standard BMS screen definitions to a 3270 terminal or terminal emulator. This document may be used 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.
SIMOTIME Services has experience in moving or sharing data or application processing across a variety of systems. For additional information about SIMOTIME Services or Technologies please contact us using the information in the Contact or Feedback section of this document.
Software Agreement and Disclaimer
Permission to use, copy, modify and distribute this software, documentation or training material for any purpose requires a fee to be paid to SimoTime Technologies. Once the fee is received by SimoTime the latest version of the software, documentation or training material will be delivered and a license will be granted for use within an enterprise, provided the SimoTime copyright notice appear on all copies of the software. The SimoTime name or Logo may not be used in any advertising or publicity pertaining to the use of the software without the written permission of SimoTime Technologies.
SimoTime Technologies makes no warranty or representations about the suitability of the software, documentation or learning material for any purpose. It is provided "AS IS" without any expressed or implied warranty, including the implied warranties of merchantability, fitness for a particular purpose and non-infringement. SimoTime Technologies shall not be liable for any direct, indirect, special or consequential damages resulting from the loss of use, data or projects, whether in an action of contract or tort, arising out of or in connection with the use or performance of this software, documentation or training material.
Downloads and Links
This section includes links to documents with additional information that are beyond the scope and purpose of this document. The first group of documents may be available from a local system or via an internet connection, the second group of documents will require an internet connection.
Note: A SimoTime License is required for the items to be made available on a local system or server.
Current Server or Internet Access
The following links may be to the current server or to the Internet.
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 that are used to interpret the results of accessing VSAM data sets and/or QSAM files.
Internet Access Required
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.
Glossary of Terms
Explore the Glossary of Terms for a list of terms and definitions used in this suite of documents and white papers.
Contact or Feedback
This document was created and is maintained by SimoTime Technologies. If you have any questions, suggestions, comments or feedback please use the following contact information.
| 1. | Send an e-mail to our helpdesk. |
| 1.1. | helpdesk@simotime.com. |
| 2. | Our telephone numbers are as follows. |
| 2.1. | 1 415 763-9430 office-helpdesk |
| 2.2. | 1 415 827-7045 mobile |
We appreciate hearing from you.
Company Overview
SimoTime Technologies was founded in 1987 and is a privately owned company. We specialize in the creation and deployment of business applications using new or existing technologies and services. We have a team of individuals that understand the broad range of technologies being used in today's environments. Our customers include small businesses using Internet technologies to corporations using very large mainframe systems.
Quite often, to reach larger markets or provide a higher level of service to existing customers it requires the newer Internet technologies to work in a complementary manner with existing corporate mainframe systems. We specialize in preparing applications and the associated data that are currently residing on a single platform to be distributed across a variety of platforms.
Preparing the application programs will require the transfer of source members that will be compiled and deployed on the target platform. The data will need to be transferred between the systems and may need to be converted and validated at various stages within the process. SimoTime has the technology, services and experience to assist in the application and data management tasks involved with doing business in a multi-system environment.
Whether you want to use the Internet to expand into new market segments or as a delivery vehicle for existing business functions simply give us a call or check the web site at http://www.simotime.com
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