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DefaultConstraint Class

The DefaultConstraint object represents a SQL Server default constraint.

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

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

The DefaultConstraint type exposes the following members.

  NameDescription
Public propertyCreateDateGets the date when the default constraint was created.
Public propertyDateLastModifiedGets the date when the default constraint was last modified.
Public propertyExtendedPropertiesGets the extended properties of the default constraint.
Public propertyIDGets the default constraint ID value.
Public propertyIsFileTableDefinedGets or sets whether the file table is defined.
Public propertyIsSystemNamedGets the Boolean property value that specifies whether the default constraint was named by the system or the user.
Public propertyNameGets or sets the default constraint name. (Overrides NamedSmoObject.Name.)
Public propertyParentGets the Column object that is the parent of the DefaultConstraint object.
Public propertyPropertiesGets a collection of Property objects that represent the object properties. (Inherited from SqlSmoObject.)
Public propertyStateGets the state of the referenced object. (Inherited from SmoObjectBase.)
Public propertyTextGets or sets the Transact-SQL statement that defines the default constraint.
Public propertyUrnGets the Uniform Resource Name (URN) address value that uniquely identifies the object. (Inherited from SqlSmoObject.)
Public propertyUserDataGets or sets user-defined data associated with the referenced object. (Inherited from SmoObjectBase.)
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  NameDescription
Public methodAlterUpdates any DefaultConstraint object property changes on the instance of SQL Server.
Public methodCreateCreates a default constraint in the parent database as defined by the DefaultConstraint object.
Public methodDiscoverDiscovers a list of type Object. (Inherited from SqlSmoObject.)
Public methodDropRemoves the default constraint.
Public methodEquals (Inherited from Object.)
Protected methodFormatSqlVariantFormats an object as SqlVariant type. (Inherited from SqlSmoObject.)
Protected methodGetContextDBGets the context database that is associated with this object. (Inherited from SqlSmoObject.)
Protected methodGetDBNameGets the database name that is associated with the object. (Inherited from SqlSmoObject.)
Public methodGetHashCode (Inherited from Object.)
Protected methodGetPropValueGets a property value of the SqlSmoObject object. (Inherited from SqlSmoObject.)
Protected methodGetPropValueOptionalGets a property value of the SqlSmoObject object. (Inherited from SqlSmoObject.)
Protected methodGetPropValueOptionalAllowNullGets a property value of the SqlSmoObject object. (Inherited from SqlSmoObject.)
Protected methodGetServerObjectGets the server of the SqlSmoObject object. (Inherited from SqlSmoObject.)
Public methodGetType (Inherited from Object.)
Public methodInitialize()Initializes the object and forces the properties be loaded. (Inherited from SqlSmoObject.)
Public methodInitialize(Boolean)Initializes the object and forces the properties be loaded. (Inherited from SqlSmoObject.)
Protected methodIsObjectInitializedVerifies whether the object has been initialized. (Inherited from SqlSmoObject.)
Protected methodIsObjectInSpaceVerifies whether the object is isolated or connected to the instance of SQL Server. (Inherited from SqlSmoObject.)
Public methodRefreshRefreshes the script name. (Inherited from ScriptNameObjectBase.)
Public methodRenameRenames the default constraint.
Public methodScript()Generates a Transact-SQL script that can be used to re-create the SQL Server default constraint.
Public methodScript(ScriptingOptions)Generates a Transact-SQL script that can be used to re-create the SQL Server default constraint as specified by the scripting options.
Protected methodSetParentImplSets the parent of the SqlSmoObject to the newParent parameter. (Inherited from SqlSmoObject.)
Public methodToStringReturns a String that represents the referenced object. (Inherited from SqlSmoObject.)
Public methodValidateValidates the state of an object. (Inherited from SmoObjectBase.)
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  NameDescription
Public eventPropertyChangedRepresents the event that occurs when a property is changed. (Inherited from SqlSmoObject.)
Public eventPropertyMetadataChangedRepresents the event that occurs when property metadata changes. (Inherited from SqlSmoObject.)
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  NameDescription
Explicit interface implemetationPrivate methodIAlienObject.DiscoverDiscovers any dependencies. Do not reference this member directly in your code. It supports the SQL Server infrastructure. (Inherited from SqlSmoObject.)
Explicit interface implemetationPrivate methodIAlienObject.GetDomainRootReturns the root of the domain. (Inherited from SqlSmoObject.)
Explicit interface implemetationPrivate methodIAlienObject.GetParentGets the parent of this object. Do not reference this member directly in your code. It supports the SQL Server infrastructure. (Inherited from SqlSmoObject.)
Explicit interface implemetationPrivate methodIAlienObject.GetPropertyTypeGets the type of the specified property. (Inherited from SqlSmoObject.)
Explicit interface implemetationPrivate methodIAlienObject.GetPropertyValueGets the value of the specified property. (Inherited from SqlSmoObject.)
Explicit interface implemetationPrivate methodIAlienObject.GetUrnGets the Unified Resource Name (URN) of the object. Do not reference this member directly in your code. It supports the SQL Server infrastructure. (Inherited from SqlSmoObject.)
Explicit interface implemetationPrivate methodIAlienObject.ResolveGets the instance that contains the information about the object from the Unified Resource Name (URN) of the object. (Inherited from SqlSmoObject.)
Explicit interface implemetationPrivate methodIAlienObject.SetObjectStateSets the object state to the specified SfcObjectState value. (Inherited from SqlSmoObject.)
Explicit interface implemetationPrivate methodIAlienObject.SetPropertyValueSets the property value. (Inherited from SqlSmoObject.)
Explicit interface implemetationPrivate methodISfcPropertyProvider.GetPropertySetGets the interface reference to the set of properties of this object. (Inherited from SqlSmoObject.)
Explicit interface implemetationPrivate propertyISfcSupportsDesignMode.IsDesignModeGets a Boolean value that indicates whether the object supports design mode.
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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

Any public static (Shared in Microsoft Visual Basic) members of this type are safe for multithreaded operations. Any instance members are not guaranteed to be thread safe.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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