92 lines
5.9 KiB
HTML
92 lines
5.9 KiB
HTML
|
<?xml version="1.0" encoding="UTF-8"?>
|
||
|
|
<!DOCTYPE html
|
||
|
|
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
||
|
|
<html lang="en-us" xml:lang="en-us">
|
||
|
|
<head>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
||
|
|
<meta name="security" content="public" />
|
||
|
|
<meta name="Robots" content="index,follow" />
|
||
|
|
<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
|
||
|
|
<meta name="DC.Type" content="reference" />
|
||
|
|
<meta name="DC.Title" content="Data manipulation commands" />
|
||
|
|
<meta name="abstract" content="A CL procedure or program can use several commands, called data manipulation commands." />
|
||
|
|
<meta name="description" content="A CL procedure or program can use several commands, called data manipulation commands." />
|
||
|
|
<meta name="DC.subject" content="variable, indicator declared as variable" />
|
||
|
|
<meta name="keywords" content="variable, indicator declared as variable" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="wfile.htm" />
|
||
|
|
<meta name="DC.Relation" scheme="URI" content="../clfinder/finder.htm" />
|
||
|
|
<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
|
||
|
|
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
|
||
|
|
<meta name="DC.Format" content="XHTML" />
|
||
|
|
<meta name="DC.Identifier" content="objdatacmds" />
|
||
|
|
<meta name="DC.Language" content="en-us" />
|
||
|
|
<!-- All rights reserved. Licensed Materials Property of IBM -->
|
||
|
|
<!-- US Government Users Restricted Rights -->
|
||
|
|
<!-- Use, duplication or disclosure restricted by -->
|
||
|
|
<!-- GSA ADP Schedule Contract with IBM Corp. -->
|
||
|
|
<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
|
||
|
|
<link rel="stylesheet" type="text/css" href="./ic.css" />
|
||
|
|
<title>Data manipulation commands</title>
|
||
|
|
</head>
|
||
|
|
<body id="objdatacmds"><a name="objdatacmds"><!-- --></a>
|
||
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
||
|
|
<h1 class="topictitle1">Data manipulation commands</h1>
|
||
|
|
<div><p>A CL procedure or program can use several commands, called data
|
||
|
|
manipulation commands.</p>
|
||
|
|
<div class="section"><p>These commands let you refer to a display file to send data to
|
||
|
|
and receive data from device displays. These commands also allows you to refer
|
||
|
|
to a database file to read records from a database file. These commands are:</p>
|
||
|
|
<dl><dt class="dlterm"><span class="cmdname">Declare File (DCLF)</span></dt>
|
||
|
|
<dd>Defines a display or database file to be used in a procedure or program.
|
||
|
|
The fields in the file are automatically declared as variables for use in
|
||
|
|
the procedure or program.</dd>
|
||
|
|
<dt class="dlterm"><span class="cmdname">Send File (SNDF)</span></dt>
|
||
|
|
<dd>Sends data to the display.</dd>
|
||
|
|
<dt class="dlterm"><span class="cmdname">Receive File (RCVF)</span></dt>
|
||
|
|
<dd>Receives data from the display or database.</dd>
|
||
|
|
<dt class="dlterm"><span class="cmdname">Send/Receive File (SNDRCVF)</span></dt>
|
||
|
|
<dd>Sends data to the display; then asks for input and, optionally, receives
|
||
|
|
data from the display.</dd>
|
||
|
|
<dt class="dlterm"><span class="cmdname">Override with Display File (OVRDSPF)</span></dt>
|
||
|
|
<dd>Allows a run-time override of a file used by a procedure or program with
|
||
|
|
a display file.</dd>
|
||
|
|
<dt class="dlterm"><span class="cmdname">Override with Database File (OVRDBF)</span></dt>
|
||
|
|
<dd>Allows a run-time override of a file used by a procedure or program with
|
||
|
|
a database file.</dd>
|
||
|
|
</dl>
|
||
|
|
<p>These commands let a running program communicate with a
|
||
|
|
device display using the display functions provided by DDS, and to read records
|
||
|
|
from a database file. DDS provides functions for writing menus and performing
|
||
|
|
basic application-oriented data requests that are characteristic of many CL
|
||
|
|
applications.</p>
|
||
|
|
<br /><img src="rbafn505.gif" alt="These commands let a running program communicate with a device display using the display functions provided by DDS, and to read records from a database file. DDS provides functions for writing menus and performing basic application-oriented data requests that are characteristic of many CL applications." /><br /> <p>The fields on the display
|
||
|
|
or in the record are identified in the DDS for the file. In order for the
|
||
|
|
CL procedure or program to use the fields, the file must be referred to in
|
||
|
|
the CL procedure or program by the <span class="cmdname">Declare File (DCLF)</span> command.
|
||
|
|
This reference causes the fields and indicators in the file to be declared
|
||
|
|
automatically in your procedure or program as variables. You can use these
|
||
|
|
variables in any way in CL commands; however, their primary purpose is to
|
||
|
|
send information to and receive information from a display. The <span class="cmdname">Declare
|
||
|
|
File (DCLF)</span> command is not used at run time.</p>
|
||
|
|
<p>The format of
|
||
|
|
the display and the options for the fields are specified in the device file
|
||
|
|
and controlled through the use of indicators. Up to 99 indicator values can
|
||
|
|
be used with DDS and CL support. Indicator variables are declared in your
|
||
|
|
CL procedure or program in the form of logical variables with names &IN01
|
||
|
|
through &IN99 for each indicator that appears in the device file record
|
||
|
|
formats referred to on the <span class="cmdname">Declare File (DCLF)</span> command.
|
||
|
|
Indicators let you display fields and control data management display functions,
|
||
|
|
and provide response information to your procedure or program from the device
|
||
|
|
display. Indicators are not used with database files.</p>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
<div>
|
||
|
|
<div class="familylinks">
|
||
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="wfile.htm" title="Two types of files are supported in CL procedures and programs: display files and database files.">Work with files in CL procedures</a></div>
|
||
|
|
</div>
|
||
|
|
<div class="relinfo"><strong>Related information</strong><br />
|
||
|
|
<div><a href="../clfinder/finder.htm">CL command finder</a></div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</body>
|
||
|
|
</html>
|