| Report
variables give you better
control over the information
defining behaviour of your
report at runtime especially when integrating a report with an application.
Report
variables can be defined at
design time and used in various
formulae and queries. The
values to these variables
can be passed at run-time
while previewing the report
in application.
Depending
on various factors you can
decide at runtime the extent of information to be printed and in
how much detail. For example, to develop yearly sales report that displays sales data of
a particular year, you might at runtime want to pass year value from an application at a runtime
based on some selection.
For this, you can define
one report variable at design time and use it in
sales data retrieval query.
You can then the year value when previewing the report from your application. The Report
will display data of that
particular year.
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