Статья
09/28/2010

Класс UserDefinedType

The UserDefinedType represents an alias data type that is based on .NET data types.

Пространство имен: Microsoft.SqlServer.Management.Smo
Сборка: Microsoft.SqlServer.Smo (в Microsoft.SqlServer.Smo.dll)

Синтаксис

'Декларация
<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)> _
<PhysicalFacetAttribute> _
Public NotInheritable Class UserDefinedType _
    Inherits ScriptSchemaObjectBase _
    Implements IObjectPermission, ICreatable, IDroppable, IExtendedProperties,  _
    IScriptable
'Применение
Dim instance As UserDefinedType

[EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)]
[PhysicalFacetAttribute]
public sealed class UserDefinedType : ScriptSchemaObjectBase, 
    IObjectPermission, ICreatable, IDroppable, IExtendedProperties, IScriptable

[EvaluationModeAttribute(AutomatedPolicyEvaluationMode::CheckOnSchedule)]
[PhysicalFacetAttribute]
public ref class UserDefinedType sealed : public ScriptSchemaObjectBase, 
    IObjectPermission, ICreatable, IDroppable, IExtendedProperties, IScriptable

[<SealedAttribute>]
[<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)>]
[<PhysicalFacetAttribute>]
type UserDefinedType =  
    class
        inherit ScriptSchemaObjectBase
        interface IObjectPermission
        interface ICreatable
        interface IDroppable
        interface IExtendedProperties
        interface IScriptable
    end

public final class UserDefinedType extends ScriptSchemaObjectBase implements IObjectPermission, ICreatable, IDroppable, IExtendedProperties, IScriptable

Замечания

To get UserDefinedType object permissions, users can be a member of the public fixed server role.

To set UserDefinedType object permissions, users must have CREATE TYPE permission in the parent database and ALTER permission on specified schema. If an assembly is specified, users must either own the assembly or have REFERENCES permission on it.

To create a alias data type, users must have CREATE TYPE permission in the parent database and ALTER permission on specified schema. If an assembly is specified, users must either own the assembly or have REFERENCES permission on it.

To drop a alias data type, users must have CONTROL permission on the type and ALTER permission on the specified schema.

Thread Safety

Все общие статические члены этого типа (Shared в Microsoft Visual Basic) можно использовать в многопоточных операциях. Безопасная многопоточная работа с членами экземпляров типа не гарантируется.