Editing Properties

1. Expand the Data Model folder in the tree view of the project you have created and navigate to the Entity Types subfolder.
2. Expand the node for the SalesOrder entity type and double-click the Properties subfolder to display the properties of this entity type in the mass maintenance view.
3. View the properties for this entity type and note that the SalesOrderID is specified as being a key field.
4. To edit the existing properties, choose Edit.
5. Select the Currency node and select the checkbox to indicate that this is also a key field in the data model.
6. Change the properties for Currency by deselecting the Deletable checkbox. This means that this field can no longer be deleted at runtime.
7. Select the Sortable column and choose the Invert pushbutton to invert the current values and thereby deselect this checkbox for all properties simultaneously. This means that the properties will no longer be sortable at runtime.
8. Choose Save to save the changes you have made to the entity type's properties.

You have changed the entity types properties by defining Currency as a key field and specifying that it cannot be deleted at runtime. You have also specified that the properties are no longer sortable.