Class mappings

Chapter 11 Generating .NET 2.0 Persistent Objects and Windows Applications

Class mappings

There are two kinds of classes in ADO.NET:

Entity classes - have their own database identities, mapping files and life cycles
Value type classes - depend on entity classes. Also known as component classes

ADO.NET specific class mapping options are defined in the ADO.NET tab of the class property sheet:

Option	Description
Default cascade	Specifies the default cascade style.
Default access	Specifies the default access type (field or property)
Default command type	Specifies command type, currently we supply Text and StoreProcedure to users.
Lazy	Specifies that the class should be lazy fetching.
Abstract class	Specifies that the class is abstract.
Discriminator column	Specifies the discriminator column or formula for polymorphic behavior in a one table per hierarchy mapping strategy.
Discriminator value	Specifies a value that distinguishes individual subclasses, which are used for polymorphic behavior.
Discriminator type	Specifies the discriminator type.

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