ForeignKey 类
The ForeignKey object represents a SQL Server foreign key.
继承层次结构
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
命名空间: Microsoft.SqlServer.Management.Smo
程序集: Microsoft.SqlServer.Smo(在 Microsoft.SqlServer.Smo.dll 中)
语法
声明
Public NotInheritable Class ForeignKey _
Inherits ScriptNameObjectBase _
Implements ICreatable, IDroppable, IMarkForDrop, IAlterable, _
IRenamable, IExtendedProperties, IScriptable
用法
Dim instance As ForeignKey
public sealed class ForeignKey : ScriptNameObjectBase,
ICreatable, IDroppable, IMarkForDrop, IAlterable, IRenamable,
IExtendedProperties, IScriptable
public ref class ForeignKey sealed : public ScriptNameObjectBase,
ICreatable, IDroppable, IMarkForDrop, IAlterable, IRenamable,
IExtendedProperties, IScriptable
[<SealedAttribute>]
type ForeignKey =
class
inherit ScriptNameObjectBase
interface ICreatable
interface IDroppable
interface IMarkForDrop
interface IAlterable
interface IRenamable
interface IExtendedProperties
interface IScriptable
end
public final class ForeignKey extends ScriptNameObjectBase implements ICreatable, IDroppable, IMarkForDrop, IAlterable, IRenamable, IExtendedProperties, IScriptable
ForeignKey 类型公开以下成员。
构造函数
名称 | 说明 | |
---|---|---|
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. |
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属性
名称 | 说明 | |
---|---|---|
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. | |
ExecuteForScalar | Gets or sets the Boolean property value that specifies whether the object is set to the execute for scalar option. (从 SqlSmoObject 继承。) | |
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 | Gets the Boolean property value that specifies whether the object properties have been updated but not yet persisted on the server. (从 SqlSmoObject 继承。) | |
Name | Gets or sets the name of the object. (从 NamedSmoObject 继承。) | |
NotForReplication | Gets the Boolean property value that specifies whether the foreign key is available for replication. | |
ObjectInSpace | Gets the Boolean property value that specifies whether the object exists in isolation, or whether it is directly or indirectly connected to the instance of SQL Server. (从 SqlSmoObject 继承。) | |
Parent | Gets or sets the Table object that is the parent of the ForeignKey object. | |
Properties | Gets a collection of Property objects that represent the object properties. (从 SqlSmoObject 继承。) | |
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 | Gets the scalar result for the referenced object. (从 SqlSmoObject 继承。) | |
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. (从 SmoObjectBase 继承。) | |
UpdateAction | Gets or sets the Boolean property value that specifies whether the foreign key supports cascading updates. | |
Urn | Gets the Uniform Resource Name (URN) address value that uniquely identifies the object. (从 SqlSmoObject 继承。) | |
UserData | Gets or sets user-defined data associated with the referenced object. (从 SmoObjectBase 继承。) |
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方法
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显式接口实现
名称 | 说明 | |
---|---|---|
IAlienObjectDiscover | (从 SqlSmoObject 继承。) | |
IAlienObjectGetParent | (从 SqlSmoObject 继承。) | |
IAlienObjectGetProperty | (从 SqlSmoObject 继承。) | |
ISfcPropertyProviderGetPropertySet | (从 SqlSmoObject 继承。) | |
IAlienObjectGetUrn | (从 SqlSmoObject 继承。) | |
IAlienObjectResolve | (从 SqlSmoObject 继承。) | |
IAlienObjectSetProperty | (从 SqlSmoObject 继承。) |
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注释
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
此类型的任何公共静态(Microsoft Visual Basic 中的 Shared)成员在多线程操作中是安全的。 不保证所有实例成员都对于线程安全的。
线程安全
此类型的任何公共 static(在 Visual Basic 中为 Shared) 成员都是线程安全的。不保证所有实例成员都是线程安全的。