Publishing Reports to the Web - Downloads - Oracle

Creating XML Data Models
16.3.1 Creating Multiple Data Sources
The tag now supports the creation of multiple data sources as well as the new
pluggable data sources. Each data source is enclosed within its own
tag. The data type definition for the dataSource element is:
The following example creates two SQL data sources and names them Q_1 and Q_2. It
also creates all the necessary columns for the data sources and the default
group—giving the group the specified defaultGroupName or defaulting its own
name if defaultGroupName is not specified.
select * from departments
select * from employees
16.3.2 Linking Between Data Sources
In the presence of multiple data sources, it may be desirable to link the data sources
together to create the appropriate data model. Oracle Reports data model link objects
have also been exposed through Oracle Reports XML. They support both group- and
column-level links. You can specify any number of links to create the required data
model.
The data type definition for the link element is:
The link element is placed within a data element and can link any two dataSource
objects defined within the data element. For example:
16-8 Oracle Application Server Reports Services Publishing Reports to the Web