When you choose any of the Active Data data sources (ADO, DAO, RDO, or Data Definition Files), the RDC displays the Select Data Source dialog box with the appropriate tools enabled.
ActiveX Data Objects is the new data connection technology designed to provide a common interface for working with relational databases, mail messaging, event logs, and most any other form of data storage. ADO can be used to connect to any ODBC or OLE DB compliant data source when you design your report in the Report Designer Component.
The resulting ADO Recordset is not directly available from the Report Designer Component, but it can be replaced by alternative Recordset objects. For example, if your Visual Basic application allows users to make choices that can affect the set of data displayed by a report, simply create a new ADO Recordset at runtime, then pass it to the Report Designer Component using the SetDataSource method. The only restriction is that the fields in the new Recordset match the fields originally used to design the report. For more information on using the SetDataSource method, see SetDataSource method.
ADO is the most flexible option for data access. It provides a means of connecting to all kinds of data, including mail messaging, event logs, and Web server site data. In addition, it has been designed, ultimately, to replace DAO and RDO.
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