Answer Posted / sundar selvaraj
A control variable is used to dynamically set attribute and
colour definitions for a field or group of fields depending
upon a program condition. For example, Consider an order
processing screen that allows you to create new contracts,
modify existing contracts and look-up paid-up contracts.
The screen used for all these functions is the same.
However, when a paid-up contract is shown to the user, you
do not expect it to be displayed in a modifiable state. So,
you protect all the fields of the map and show it
like "read only". However, for modifying an existing, non-
paid-up map, you enable certain fields. So, control
variables can be used in scenarios like this to dynamically
set the attributes of the field.
I hope this answers your query.
Is This Answer Correct ? | 12 Yes | 0 No |
Post New Answer View All Answers
Explain how to find occurrence of mu and pe fields in a file?
What is a hyperdescriptor?
What is the difference between escape(top or bottom) and escape immediate(top or bottom?
Explain is it possible to code goto statement in natural? If yes please provide the syntax of the same?
What is the quality process in development?
How to receive data passed through jcl parm parameter in a natural program? How data definition is defined in the program?
Define cobol coding sheet?
Explain difference between read work file 1 and read work file once? Why we are using work file once?
Tell me can we update with histogram?
Explain adabas basic concepts. Like inverted list, address converter ,data storage?
Explain how are you going to remove duplicates from the file that is being read?
Explain how to receive data passed through jcl parm parameter in a natural program? How data definition is defined in the program?
What is cobol coding sheet?
Explain difference between read(1) and read work file once?
How are you going to remove duplicates from the file that is being read?