9.15.DROP XML SCHEMA Statement

<xml schema removal> ::=
    DROP XML SCHEMA <target URI>

This reverts the effect of CREATE XML SCHEMA .

The <target URI> should be a string constant that is equal to the value of "targetNamespace" attribute of "xs:schema" element of a previously declared XML schema.

The statement signals an error if the XMLSchema to be dropped is used in some WITH SCHEMA constraint.