ForeignKey 類別
The ForeignKey object represents a SQL Server foreign key.
繼承階層
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..::..ForeignKey
命名空間： Microsoft.SqlServer.Management.Smo
組件： Microsoft.SqlServer.Smo (在 Microsoft.SqlServer.Smo.dll 中)
語法
'宣告
Public NotInheritable Class ForeignKey _
Inherits ScriptNameObjectBase _
Implements ICreatable, IDroppable, IMarkForDrop, IAlterable, _
IRenamable, IExtendedProperties, IScriptable, ISfcSupportsDesignMode
'用途
Dim instance As ForeignKey
public sealed class ForeignKey : ScriptNameObjectBase,
ICreatable, IDroppable, IMarkForDrop, IAlterable, IRenamable,
IExtendedProperties, IScriptable, ISfcSupportsDesignMode
public ref class ForeignKey sealed : public ScriptNameObjectBase,
ICreatable, IDroppable, IMarkForDrop, IAlterable, IRenamable,
IExtendedProperties, IScriptable, ISfcSupportsDesignMode
[<SealedAttribute>]
type ForeignKey =
class
inherit ScriptNameObjectBase
interface ICreatable
interface IDroppable
interface IMarkForDrop
interface IAlterable
interface IRenamable
interface IExtendedProperties
interface IScriptable
interface ISfcSupportsDesignMode
end
public final class ForeignKey extends ScriptNameObjectBase implements ICreatable, IDroppable, IMarkForDrop, IAlterable, IRenamable, IExtendedProperties, IScriptable, ISfcSupportsDesignMode
ForeignKey 型別公開下列成員。
建構函式
| 名稱 | 說明 | |
|---|---|---|
.gif "公用方法") |
ForeignKey() () () () | Initializes a new instance of the ForeignKey class. |
|
ForeignKey(Table, String) | Initializes a new instance of the ForeignKey class on the specified table with the specified name. |
上層
屬性
| 名稱 | 說明 | |
|---|---|---|
.gif "公用屬性") |
Columns | Represents a collection of Column objects. Each Column object represents a column included in the foreign key. |
|
CreateDate | Gets the date and time when the foreign key was created. |
|
DateLastModified | Gets the date and time when the foreign key was last modified. |
|
DeleteAction | Gets or sets the action taken when the row that is referenced by the foreign key is deleted. |
.gif "受保護的屬性") |
ExecuteForScalar | 取得或設定 Boolean 屬性值，指定物件是否設定為執行純量選項。 (繼承自 SqlSmoObject。) |
|
ExtendedProperties | Represents a collection of ExtendedProperty objects. Each ExtendedProperty object represents an extended property on the ForeignKey object. |
|
ID | Gets the ID value that uniquely identifies the foreign key. |
|
IsChecked | Gets or sets the Boolean property value that specifies whether the foreign key constraint was enabled without checking existing rows. |
|
IsEnabled | Gets or sets the Boolean property value that specifies whether the foreign key is enabled. |
|
IsSystemNamed | Gets the Boolean property value that specifies whether the foreign key is named by the system or by the user. |
|
IsTouched | 取得 Boolean 屬性值，指定物件屬性是否已更新但尚未保存在伺服器上。 (繼承自 SqlSmoObject。) |
|
Name | Gets or sets the name of the foreign key. (覆寫 NamedSmoObject. . :: . .Name。) |
|
NotForReplication | Gets the Boolean property value that specifies whether the foreign key is available for replication. |
|
ObjectInSpace | 取得 Boolean 屬性值，指定物件是否存在於隔離中，或是直接或間接連接至 SQL Server 執行個體。 (繼承自 SqlSmoObject。) |
|
Parent | Gets or sets the Table object that is the parent of the ForeignKey object. |
|
Properties | 取得代表物件屬性的 Property 物件集合。 (繼承自 SqlSmoObject。) |
|
ReferencedKey | Gets the primary key referenced by the foreign key. |
|
ReferencedTable | Gets or sets the table that contains the primary key referenced by the foreign key. |
|
ReferencedTableSchema | Gets or sets the table schema that contains the primary key referenced by the foreign key. |
|
ScalarResult | 取得受參考物件的純量結果。 (繼承自 SqlSmoObject。) |
|
ScriptReferencedTable | Gets or sets the Boolean value that specifies whether to script the table referenced by the foreign key. |
|
ScriptReferencedTableSchema | Gets or sets the Boolean value that specifies whether to script the schema of the table referenced by the foreign key. |
|
State | Gets the state of the referenced object. (繼承自 SmoObjectBase。) |
|
UpdateAction | Gets or sets the Boolean property value that specifies whether the foreign key supports cascading updates. |
|
Urn | 取得可唯一識別物件的統一資源名稱 (URN) 位址值。 (繼承自 SqlSmoObject。) |
|
UserData | Gets or sets user-defined data associated with the referenced object. (繼承自 SmoObjectBase。) |
上層
方法
.gif "受保護的方法")
上層
事件
| 名稱 | 說明 | |
|---|---|---|
.gif "公用事件") |
PropertyChanged | 代表屬性變更時所發生的事件。 (繼承自 SqlSmoObject。) |
|
PropertyMetadataChanged | 代表屬性中繼資料變更時所發生的事件。 (繼承自 SqlSmoObject。) |
上層
欄位
| 名稱 | 說明 | |
|---|---|---|
.gif "受保護的欄位") |
m_ExtendedProperties | 代表屬性，此屬性定義為擴充 SqlSmoObject 所提供的屬性。 (繼承自 SqlSmoObject。) |
|
singletonParent | 代表單一父代。 (繼承自 SqlSmoObject。) |
上層
明確 繼承 實作
| 名稱 | 說明 | |
|---|---|---|
.gif "明確介面實作") .gif "私用方法") |
IAlienObject. . :: . .Discover | 探索任何相依性。不要直接在程式碼中參照此成員。其支援 SQL Server 基礎結構。 (繼承自 SqlSmoObject。) |
|
IAlienObject. . :: . .GetDomainRoot | 傳回網域的根目錄。 (繼承自 SqlSmoObject。) |
|
IAlienObject. . :: . .GetParent | 取得此物件的父系。不要直接在程式碼中參照此成員。其支援 SQL Server 基礎結構。 (繼承自 SqlSmoObject。) |
|
IAlienObject. . :: . .GetPropertyType | 取得指定的屬性類型。 (繼承自 SqlSmoObject。) |
|
IAlienObject. . :: . .GetPropertyValue | 取得指定的屬性值。 (繼承自 SqlSmoObject。) |
|
IAlienObject. . :: . .GetUrn | 取得物件的統一資源名稱。不要直接在程式碼中參照此成員。其支援 SQL Server 基礎結構。 (繼承自 SqlSmoObject。) |
|
IAlienObject. . :: . .Resolve | 取得執行個體，其中包含物件統一資源名稱之物件的相關資訊。 (繼承自 SqlSmoObject。) |
|
IAlienObject. . :: . .SetObjectState | 將物件狀態設定為指定的 SfcObjectState 值。 (繼承自 SqlSmoObject。) |
|
IAlienObject. . :: . .SetPropertyValue | 設定屬性值。 (繼承自 SqlSmoObject。) |
|
ISfcPropertyProvider. . :: . .GetPropertySet | 取得此物件屬性集的介面參考。不要直接在程式碼中參照此成員。其支援 SQL Server 基礎結構。 (繼承自 SqlSmoObject。) |
.gif "私用屬性") |
ISfcSupportsDesignMode. . :: . .IsDesignMode | Gets a Boolean value that indicates whether the object supports design mode. 僅供參考之用。不支援。我們無法保證未來的相容性。 |
上層
備註
To get ForeignKey object properties, users can be a member of the public fixed server role.
To set ForeignKey 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 foreign key, users must have ALTER permission on the parent table or be a member of the db_owner fixed database role.
Thread Safety
此型別的任何公用靜態 (在 Microsoft Visual Basic 為共用) 成員具備多執行緒作業安全。不保證所有執行個體成員都是安全執行緒。
執行緒安全性
這個型別的任何公用 static (在 Visual Basic 中為 Shared) 成員都是執行緒安全的。並不是所有的執行個體成員都保證可以用於所有的執行緒。