You can create a link between a record in an external database and an object in your drawing. Once the link exists, use the information in the database to help you analyze, select, and display objects in your drawing.
For example, you can link property ownership data to a map of a housing development. Select records based on property value and highlight all objects linked to those records. Alternately, select all the houses in a specified area and highlight records that are linked to the selected houses.