• Artigo

Classe DefaultConstraint

The DefaultConstraint object represents a SQL Server default constraint.

Namespace:  Microsoft.SqlServer.Management.Smo
Assembly:  Microsoft.SqlServer.Smo (em Microsoft.SqlServer.Smo.dll)

Sintaxe

'Declaração
<SfcElementTypeAttribute("Default")> _
Public NotInheritable Class DefaultConstraint _
    Inherits ScriptNameObjectBase _
    Implements ICreatable, IDroppable, IRenamable, IAlterable,  _
    IExtendedProperties, IScriptable
'Uso
Dim instance As DefaultConstraint

[SfcElementTypeAttribute("Default")]
public sealed class DefaultConstraint : ScriptNameObjectBase, 
    ICreatable, IDroppable, IRenamable, IAlterable, IExtendedProperties, 
    IScriptable

[SfcElementTypeAttribute(L"Default")]
public ref class DefaultConstraint sealed : public ScriptNameObjectBase, 
    ICreatable, IDroppable, IRenamable, IAlterable, IExtendedProperties, 
    IScriptable

[<SealedAttribute>]
[<SfcElementTypeAttribute("Default")>]
type DefaultConstraint =  
    class
        inherit ScriptNameObjectBase
        interface ICreatable
        interface IDroppable
        interface IRenamable
        interface IAlterable
        interface IExtendedProperties
        interface IScriptable
    end

public final class DefaultConstraint extends ScriptNameObjectBase implements ICreatable, IDroppable, IRenamable, IAlterable, IExtendedProperties, IScriptable

Comentários

To get DefaultConstraint object properties, users can be members of the public fixed server role.

To set DefaultConstraint object properties, users must have ALTER permission on the parent table or be a member of the db_owner fixed database role.

To create or drop a default constraint, users must have ALTER permission on the parent table or be a member of the db_owner fixed database role.

Thread Safety

Qualquer membro público estático (Compartilhado no Microsoft Visual Basic) desse tipo é seguro para operações multi-threaded. Não há garantia de que qualquer membro de instância seja seguro para threads.

Segurança de thread

Quaisquer membros static (Shared no Visual Basic) públicos deste tipo são thread-safe. Não há garantia de que qualquer membro de instância seja thread-safe.