You edit or delete ColdFusion data sources in ColdFusion Administrator. In the Databases panel (Window > Databases) in Dreamweaver, click the Modify Data Sources icon on the panel toolbar. ColdFusion Administrator opens in a browser. Log in and modify the data source. For instructions, see Using ColdFusion.
To avoid getting errors after deleting or renaming a ColdFusion data source, you should update every recordset that uses the old data source in Dreamweaver by double-clicking the name of the recordset in the Bindings panel and choosing a new data source.