XML

TDV support for the XML data type complies with the ANSI 9075 section 14 XML specification.

Syntax

XML [ ( { DOCUMENT | CONTENT | SEQUENCE }

[ ( ANY | UNTYPED | XMLSCHEMA schema-details ) ]

    ) ]

Remarks

•

schema-details is of the following form:

URI target-namespace-uri [ LOCATION schema-location ] [ { ELEMENT element-name | NAMESPACE namespace-uri [ ELEMENT element-name ] } ]

| NO NAMESPACE [ LOCATION schema-location ] [ { ELEMENT element-name | NAMESPACE namespace-uri [ ELEMENT element-name ] } ]

•

target-namespace-uri, schema-location, and namespace-uri are STRING literals that represent valid URIs.

•

element-name is any valid identifier.

Examples

CAST ('<item></item>' as XML (SEQUENCE))

CAST ('<entity></entity>' as XML (SEQUENCE(ANY)))

PROCEDURE item()

BEGIN

    DECLARE item XML (SEQUENCE(XMLSCHEMA URI 'http://www.w3.org/2001/XMLSchema-instance' LOCATION 'http://www.w3.org/2001/XMLSchema-instance' ELEMENT xsi));

END