iReport Ultimate Guide - Nimsoft Library

iReport Ultimate GuideFigure 11-2The data sources combo box shows the active data sourceIf no data source is selected, it is not possible to fill a report with data, therefore, when iReport starts for the first time, a preconfiguredempty data source is defined and selected by default. Datasources can be used in conjunction with the ReportWizard, too. That’s why configuring the connection to your data is usually the first step when starting with iReport.11.3 Creating and Using JDBC ConnectionsA JDBC connection allows you to use a relational DBMS (or, in general, whatever databases are accessible through a JDBCdriver) as a data source. To set a new JDBC connection, click the New button in the Connections/Datasources dialog box(shown earlier in Figure 11-1) to open the interface for creation of a new connection (or data source). From the list, selectDatabase JDBC connection to bring up the window shown in Figure 11-3.174