Allows you to define and edit keys. In XML Schemas and ADO.NET datasets, at least one key must be defined in the parent table before a relationship can be created. For details see >Creating Primary and Unique Keys in XML Schemas.

To access this dialog box, drag a Key from the XML Schema tab of the Toolbox onto an element or click the New button in the Edit Relation dialog box.

Name

Displays the name for this key.

Element

Displays an element that represents the table that contains the key.

Fields

Displays the individual elements that are members of the table defined in the Selector box.

Nullable

Determines whether a key can contain a null value.

Dataset primary key

Determines whether this is a primary key.

See Also

Edit Relation Dialog Box | >Creating One-to-Many Relationships in XML Schemas and Datasets | >Relational Data in XML Schemas | >Creating Primary and Unique Keys in XML Schemas