This section provides a description of the Metadata Model (MDM) interface. It supplements the use of the Visual Basic Object Browser with more detailed information about the object model implemented in the Metadata Model (mdm.dll).

When you are getting started with the MDM object model, you may find it helpful to open one of the example metadata (.mdd) files simultaneously in Questionnaire Viewer and Metadata Model Explorer. For example, the following illustration shows a categorical grid question in the Questionnaire Viewer and in Metadata Model Explorer. For more on grid questions, see IGrid.