If a sequential file is used and the file is holding some records, then the existing records will be deleted first and then new records will be inserted in the file. It will not happen so in case of an indexed file or a relative file. Extend mode is used to append records in a sequential file. In this mode, records are inserted at the end.
If file access mode is Random or Dynamic , then extend mode cannot be used. Read verb is used to read the file records. The function of read is to fetch records from a file. At each read verb, only one record can be read into the file structure.
At each read statement, the file pointer is incremented and hence the successive records are read. INTO clause is optional. This program can be compiled and executed using Live Demo option where it will display all the records present in the file.
Suppose the input file data available in the input. This program can be compiled and executed using JCL on Mainframes where it will display all the records present in the file.
On Mainframes server, we do not use text files; instead we use PS files. 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.
This program was tested using Micro Focus Net Express, version 5. 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 document and the links to other documents are intended to provide a greater awareness of the Data Management and Application Processing alternatives. The 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. 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. The indexed files are those files in which the organization is always indexed, and the access is done using key values. These files use alphanumeric characters as the key, and the key must be uniquely defined.
The records in indexed files can be accessed much faster, and in any order irrespective of position using the key. A program is required which will process the Stock and Manufacturer files to create an Orders file containing ordering information for all the parts that need to be re-ordered i. The Postage rate is obtained by calling an existing program.
This program counts the number of students born in each month and displays the result. The program uses a pre-filled table of month names. This program is the solution to one of the programming exercises. Download View.
Calling external sub-programs. Copyright Notice These programs are the copyright property of Michael Coughlan. Beginners programs. The program accepts a simple student record from the user and displays the individual fields. Accepts two single digit numbers from the user, multiplies them together and displays the result. Selection and Interation. An example program demonstrating the use of Condition Names level 88's. TIMES may be used to execute a block of code x number of times.
UNTIL third format may be used to process a stream of values where the length of the stream cannot be determined in advance although in this case there is a set maximum number of values in the stream. AFTER fourth format may be used for counting iteration. AFTER fourth format may be used to simulate a mileage counter. Sequential Files.
Example program demonstrating how to create a sequential file from data input by the user. An example program that reads a sequential file and displays the records. This version does not use level 88's to signal when the end of the file has been reached.
To test the program download this testdata file. This is the correct version which uses the Condition Name level 88 "EndOfFile"to signal when the end of the file has been reached. Demonstrates how to insert records into a sequential file from a file of transaction records.
A new file is created which contains the inserted records. To test this program you will need to download Student Masterfile - Students.
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