By default, the data source of the currently active Design Editor is displayed in the bottom left area of Design Editor and in the Execution Target Bar. You can change the data source of the active Design Editor provided that no objects have been added to the active Design Editor.
To change the data source assigned to a Design Editor window:
1.Click into the Design Editor window whose properties you want to change.
2.In the Properties window, select the data source and, if applicable, default schema from the respective drop-down lists.
Alternatively, if the Execution Target Bar is visible in the Design Editor, click the data source or root object in the Execution Target Bar to jump directly to the corresponding field in the Properties window. Note that only connected data sources are available in the drop-down list.