• Articolo

Classe UserDefinedType

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

Spazio dei nomi:  Microsoft.SqlServer.Management.Smo
Assembly:  Microsoft.SqlServer.Smo (in Microsoft.SqlServer.Smo.dll)

Sintassi

'Dichiarazione
<EvaluationModeAttribute(AutomatedPolicyEvaluationMode.CheckOnSchedule)> _
<PhysicalFacetAttribute> _
Public NotInheritable Class UserDefinedType _
    Inherits ScriptSchemaObjectBase _
    Implements IObjectPermission, ICreatable, IDroppable, IExtendedProperties,  _
    IScriptable
'Utilizzo
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

Osservazioni

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

Tutti i membri statici pubblici (Shared in Microsoft Visual Basic) di questo tipo sono sicuri per le operazioni a thread multipli. Non è invece garantita la sicurezza dei membri dell'istanza.

Thread Safety

Tutti i membri pubblici static (Shared in Visual Basic) di questo tipo sono thread safe. I membri di istanza non hanno garanzia di essere thread safe.