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Applies to: 
SQL Server
Returns a row per XML schema component that is a Type, symbol_space of E.
| Column name | Data type | Description |
|---|---|---|
| <inherited columns> | -- | Inherits columns from sys.xml_schema_components. |
| is_default_fixed | bit | 1 = Default value is a fixed value. This value cannot be overridden in XML instance. 0 = Default value is not a fixed value for the element. (default). |
| is_abstract | bit | 1 = Element is abstract and cannot be used in an instance document. A member of the substitution group of the element must appear in the instance document. 0 = Element is not abstract. (default). |
| is_nillable | bit | 1 = Element is nillable. 0 = Element is not nillable. (default) |
| must_be_qualified | bit | 1 = Element must be explicitly namespace qualified. 0 = Element may be implicitly namespace qualified. (default) |
| is_extension_blocked | bit | 1 = Replacement with an instance of an extension type is blocked. 0 = Replacement with extension type is allowed. (default) |
| is_restriction_blocked | bit | 1 = Replacement with an instance of a restriction type is blocked. 0 = Replacement with restriction type is allowed. (default) |
| is_substitution_blocked | bit | 1 = Instance of a substitution group cannot be used. 0 = Replacement with substitution group is permitted. (default) |
| is_final_extension | bit | 1 = Replacement with an instance of an extension type is disallowed. 0 = Replacement in an instance of an extension type is allowed. (default) |
| is_final_restriction | bit | 1 = Replacement with an instance of a restriction type is disallowed. 0 = Replacement in an instance of a restriction type is allowed. (default) |
| default_value | nvarchar (4000) | Default value of the element. NULL if a default value is not supplied. |
Permissions
The visibility of the metadata in catalog views is limited to securables that a user either owns, or on which the user was granted some permission. For more information, see Metadata Visibility Configuration.
See Also
Catalog Views (Transact-SQL)
XML Schemas (XML Type System) Catalog Views (Transact-SQL)