Defining and assigning variables
When designing a template, it might be necessary to calculate
values or to make data attributes available in contexts where they
are normally unavailable. Define variables and assign them values.
The values can be static data or data available in the current context.
Creating dynamic data elements to define at run time
You can include dynamic data source elements to be defined
at run time. The Data Source Configuration element
allows you to reconfigure a data source. This is useful when you do
not know the connection information while starting to design your
document. For example, if you linked artifacts from two products,
A and B, the data source information can be picked up from the B at
run time. By reconfiguring a data source, you change the properties
such as URI, user name, password, and any other data source-specific
properties used by Rational® Publishing Engine when
extracting data.