InvalidUdtException Thrown when SQL Server or the ADO.NET provider detects an invalid user-defined type (UDT).

 SqlDataRecord Represents a single row of data and its metadata. This class cannot be inherited.

 SqlFunctionAttribute Used to mark a method definition of a user-defined aggregate as a function in SQL Server. The properties on the attribute reflect the physical characteristics used when the type is registered with SQL Server.

 SqlMetaData Specifies and retrieves metadata information from parameters and columns of objects. This class cannot be inherited.

 SqlMethodAttribute Indicates the determinism and data access properties of a method or property on a user-defined type (UDT). The properties on the attribute reflect the physical characteristics that are used when the type is registered with SQL Server.

 SqlUserDefinedAggregateAttribute Indicates that the type should be registered as a user-defined aggregate. The properties on the attribute reflect the physical attributes used when the type is registered with SQL Server. This class cannot be inherited.

 SqlUserDefinedTypeAttribute Used to mark a type definition in an assembly as a user-defined type (UDT) in SQL Server. The properties on the attribute reflect the physical characteristics used when the type is registered with SQL Server. This class cannot be inherited.

 DataAccessKind Describes the type of access to user data for a user-defined method or function.

 Format Used by and to indicate the serialization format of a user-defined type (UDT) or aggregate.

 SystemDataAccessKind Describes the type of access to system data for a user-defined method or function.

 IBinarySerialize Provides custom implementation for user-defined type (UDT) and user-defined aggregate serialization and deserialization.