Clase Check

Artículo
04/26/2013

The Check object represents a SQL Server check constraint.

Jerarquía de herencia

System.Object
  Microsoft.SqlServer.Management.Smo.SmoObjectBase
    Microsoft.SqlServer.Management.Smo.SqlSmoObject
      Microsoft.SqlServer.Management.Smo.NamedSmoObject
        Microsoft.SqlServer.Management.Smo.ScriptNameObjectBase
          Microsoft.SqlServer.Management.Smo.Check

Espacio de nombres: Microsoft.SqlServer.Management.Smo
Ensamblado: Microsoft.SqlServer.Smo (en Microsoft.SqlServer.Smo.dll)

Sintaxis

'Declaración
Public NotInheritable Class Check _
    Inherits ScriptNameObjectBase _
    Implements ICreatable, IDroppable, IRenamable, IMarkForDrop,  _
    IAlterable, IExtendedProperties, IScriptable, ISfcSupportsDesignMode
'Uso
Dim instance As Check

public sealed class Check : ScriptNameObjectBase, 
    ICreatable, IDroppable, IRenamable, IMarkForDrop, IAlterable, 
    IExtendedProperties, IScriptable, ISfcSupportsDesignMode

public ref class Check sealed : public ScriptNameObjectBase, 
    ICreatable, IDroppable, IRenamable, IMarkForDrop, IAlterable, 
    IExtendedProperties, IScriptable, ISfcSupportsDesignMode

[<SealedAttribute>]
type Check =  
    class 
        inherit ScriptNameObjectBase 
        interface ICreatable 
        interface IDroppable 
        interface IRenamable 
        interface IMarkForDrop 
        interface IAlterable 
        interface IExtendedProperties 
        interface IScriptable 
        interface ISfcSupportsDesignMode 
    end

public final class Check extends ScriptNameObjectBase implements ICreatable, IDroppable, IRenamable, IMarkForDrop, IAlterable, IExtendedProperties, IScriptable, ISfcSupportsDesignMode

El tipo Check expone los siguientes miembros.

Constructores

	Nombre	Descripción
	Check()	Initializes a new instance of the Check class.
	Check(SqlSmoObject, String)	Initializes a new instance of the Check class, which is owned by the specified parent object and has the specified name.

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Propiedades

	Nombre	Descripción
	CreateDate	Gets the date and time that the check constraint was created.
	DateLastModified	Gets the date and time that the check constraint was last modified.
	ExtendedProperties	Represents a collection of ExtendedProperty objects. Each ExtendedProperty object represents an extended property on the Check object.
	ID	Gets the database ID value that uniquely identifies the check constraint.
	IsChecked	Gets the Boolean property value that specifies whether the constraint was enabled without checking existing rows, so constraint may not hold for all rows
	IsEnabled	Gets the Boolean property value that specifies whether the check constraint is enabled.
	IsFileTableDefined	Gets a value that specifies whether the check constraint defines a file table.
	IsSystemNamed	Gets the Boolean property value that specifies whether the check constraint was named automatically by Microsoft SQL Server or named by the database object creator.
	Name	Gets or sets the name of the check constraint. (Invalida NamedSmoObject.Name.)
	NotForReplication	Gets the Boolean property value that specifies whether the check constraint is available for replication or not.
	Parent	Gets the SqlSmoObject object that is the parent of the Check object.
	Properties	Gets a collection of Property objects that represent the object properties. (Se hereda de SqlSmoObject.)
	State	Gets the state of the referenced object. (Se hereda de SmoObjectBase.)
	Text	Gets or sets the Transact-SQL statement that defines the check constraint.
	Urn	Gets the Uniform Resource Name (URN) address value that uniquely identifies the object. (Se hereda de SqlSmoObject.)
	UserData	Gets or sets user-defined data associated with the referenced object. (Se hereda de SmoObjectBase.)

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Métodos

	Nombre	Descripción
	Alter	Updates any Check object property changes on an instance of Microsoft SQL Server.
	Create	Creates a check constraint on the instance of SQL Server as defined by the Check object.
	Discover	Discovers a list of type Object. (Se hereda de SqlSmoObject.)
	Drop	Drops the check constraint.
	Equals	(Se hereda de Object.)
	FormatSqlVariant	Formats an object as SqlVariant type. (Se hereda de SqlSmoObject.)
	GetContextDB	Gets the context database that is associated with this object. (Se hereda de SqlSmoObject.)
	GetDBName	Gets the database name that is associated with the object. (Se hereda de SqlSmoObject.)
	GetHashCode	(Se hereda de Object.)
	GetPropValue	Gets a property value of the SqlSmoObject object. (Se hereda de SqlSmoObject.)
	GetPropValueOptional	Gets a property value of the SqlSmoObject object. (Se hereda de SqlSmoObject.)
	GetPropValueOptionalAllowNull	Gets a property value of the SqlSmoObject object. (Se hereda de SqlSmoObject.)
	GetServerObject	Gets the server of the SqlSmoObject object. (Se hereda de SqlSmoObject.)
	GetType	(Se hereda de Object.)
	Initialize()	Initializes the object and forces the properties be loaded. (Se hereda de SqlSmoObject.)
	Initialize(Boolean)	Initializes the object and forces the properties be loaded. (Se hereda de SqlSmoObject.)
	IsObjectInitialized	Verifies whether the object has been initialized. (Se hereda de SqlSmoObject.)
	IsObjectInSpace	Verifies whether the object is isolated or connected to the instance of SQL Server. (Se hereda de SqlSmoObject.)
	MarkForDrop	Marks the foreign key to be dropped next time its parent Table object is altered by the Alter method.
	Refresh	Refreshes the script name. (Se hereda de ScriptNameObjectBase.)
	Rename	Marks the foreign key to be dropped next time its parent Table object is altered by the Alter method.
	Script()	Generates a Transact-SQL script that can be used to re-create the check constraint.
	Script(ScriptingOptions)	Generates a Transact-SQL script that can be used to re-create the check constraint as specified by the script options.
	SetParentImpl	Sets the parent of the SqlSmoObject to the newParent parameter. (Se hereda de SqlSmoObject.)
	ToString	Returns a String that represents the referenced object. (Se hereda de SqlSmoObject.)
	Validate	Validates the state of an object. (Se hereda de SmoObjectBase.)

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Eventos

	Nombre	Descripción
	PropertyChanged	Represents the event that occurs when a property is changed. (Se hereda de SqlSmoObject.)
	PropertyMetadataChanged	Represents the event that occurs when property metadata changes. (Se hereda de SqlSmoObject.)

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Implementaciones de interfaces explícitas

	Nombre	Descripción
	IAlienObject.Discover	Discovers any dependencies. No haga referencia directamente a este miembro en el código. Admite la infraestructura de SQL Server. (Se hereda de SqlSmoObject.)
	IAlienObject.GetDomainRoot	Returns the root of the domain. (Se hereda de SqlSmoObject.)
	IAlienObject.GetParent	Gets the parent of this object. No haga referencia directamente a este miembro en el código. Admite la infraestructura de SQL Server. (Se hereda de SqlSmoObject.)
	IAlienObject.GetPropertyType	Gets the type of the specified property. (Se hereda de SqlSmoObject.)
	IAlienObject.GetPropertyValue	Gets the value of the specified property. (Se hereda de SqlSmoObject.)
	IAlienObject.GetUrn	Gets the Unified Resource Name (URN) of the object. No haga referencia directamente a este miembro en el código. Admite la infraestructura de SQL Server. (Se hereda de SqlSmoObject.)
	IAlienObject.Resolve	Gets the instance that contains the information about the object from the Unified Resource Name (URN) of the object. (Se hereda de SqlSmoObject.)
	IAlienObject.SetObjectState	Sets the object state to the specified SfcObjectState value. (Se hereda de SqlSmoObject.)
	IAlienObject.SetPropertyValue	Sets the property value. (Se hereda de SqlSmoObject.)
	ISfcPropertyProvider.GetPropertySet	Gets the interface reference to the set of properties of this object. (Se hereda de SqlSmoObject.)
	ISfcSupportsDesignMode.IsDesignMode	Gets a Boolean value that indicates whether the object supports design mode. Solamente se identifica con fines informativos. No compatible. La compatibilidad con versiones posteriores no está garantizada.

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Comentarios

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

To set Check object properties and run the Alter method, users must have ALTER permission on the parent table or column, or be a member of the db_owner fixed database role.

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

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

Thread Safety

Todos los miembros estáticos (compartidos en Microsoft Visual Basic) públicos de este tipo son seguros para operaciones multiproceso. No se garantiza que los miembros de instancia sean seguros para subprocesos.

Seguridad para subprocesos

Cualquier miembro público static (Shared en Visual Basic) de este tipo es seguro para subprocesos. No se garantiza que los miembros de instancia sean seguros para subprocesos.