XSD Annotations (SQLXML 4.0)

Applies to: SQL Server Azure SQL Database

The following table lists the XSD annotations that were introduced in SQL Server 2005 (9.x), and compares them with the XDR annotations that were introduced in SQL Server 2000 (8.x).

XSD annotation	Description	Topic link	XDR annotation
sql:encode	When an XML element or attribute is mapped to a SQL Server BLOB column, allows requesting a reference URI. This URI can be used later to return BLOB data.	Requesting URL References to BLOB Data Using sql:encode (SQLXML 4.0)	url-encode
sql:guid	Allows you to specify whether to use a GUID value generated by SQL Server or use the value provided in the updategram for that column.	Using the sql:identity and sql:guid Annotations	Not supported
sql:hide	Hides the element or attribute that is specified in the schema in the resulting XML document.	Hiding Elements and Attributes by Using sql:hide	Not supported
sql:identity	Can be specified on any node that maps to an IDENTITY-type database column. The value specified for this annotation defines how the corresponding IDENTITY-type column in the database is updated.	Using the sql:identity and sql:guid Annotations	Not supported
sql:inverse	Instructs the updategram logic to inverse its interpretation of the parent-child relationship that has been specified using <sql:relationship>.	Specifying the sql:inverse Attribute on sql:relationship (SQLXML 4.0)	Not supported
sql:is-constant	Creates an XML element that does not map to any table. The element appears in the query output.	Creating Constant Elements Using sql:is-constant (SQLXML 4.0)	Same
sql:key-fields	Allows specification of column(s) that uniquely identify the rows in a table.	Identifying Key Columns Using sql:key-fields (SQLXML 4.0)	Same
sql:limit-field sql:limit-value	Allows limiting the values that are returned on the basis of a limiting value.	Filtering Values Using sql:limit-field and sql:limit-value (SQLXML 4.0)	Same
sql:mapped	Allows schema items to be excluded from the result.	Excluding Schema Elements from the Resulting XML Document Using sql:mapped (SQLXML 4.0)	map-field
sql:max-depth	Allows you to specify depth in recursive relationships that are specified in the schema.	Specifying Depth in Recursive Relationships by Using sql:max-depth	Not supported
sql:overflow-field	Identifies the database column that contains the overflow data.	Retrieving Unconsumed Data Using the sql:overflow-field (SQLXML 4.0)	Same
sql:prefix	Creates valid XML ID, IDREF, and IDREFS. Prepends the values of ID, IDREF, and IDREFS with a string.	Creating Valid ID, IDREF, and IDREFS Type Attributes Using sql:prefix (SQLXML 4.0)	Same
sql:relationship	Specifies relationships between XML elements. The parent, child, parent-key, and child-key attributes are used to establish the relationship.	Specifying Relationships Using sql:relationship (SQLXML 4.0)	The attribute names are different: key-relation foreign-relation key foreign-key
sql:use-cdata	Allows specifying CDATA sections to be used for certain elements in the XML document.	Creating CDATA Sections Using sql:use-cdata (SQLXML 4.0)	Same

Note

The XSD native targetNamespace attribute replaces the target-namespace annotation that was introduced in the SQL Server 2000 (8.x) XDR mapping schema.

See Also

Specifying a Target Namespace Using the targetNamespace Attribute (SQLXML 4.0)