The Mapping table displays the following set of buttons in its tool bar:
Sort the content of the Mapping table in an ascending or in a descending order.
If the specified property is a simple field, the field name displays. If it is part of a complex type (structure), it displays the structure name or field.A search help is assigned to each property. The search help provides a popup with the entity structure. When you open the Mapping screen for the first time, the Mapping Table displays the default entity set properties. You can map the same property to more than one data source attribute. The same icons for the entity properties are available in the entity property search help, to enable you to clearly identify the key properties. Press F4 in a property to get the Property view, which displays all the fields for the entity set, and to select a property.
Press F4 to select the data source parameter from the popup.
Drag and drop the data source parameter from the Data Source view into the Mapping table; on the same row as the entity set property to which you want to map.