Using XML with Legacy Business Applications

Modularity: The xs:include and xs:import Elements

As with source code in programs, once something gets to a certain size it starts to get a bit unwieldy in terms of understandability and management. Schema language provides two mechanisms for breaking a single logical schema into several different physical schemas. Both are Elements in the W3C XML Schema namespace.

• xs:include: This Element directs a schema processor to read the file specified by the schemaLocation Attribute and consider it as part of the namespace of the including schema. The included schema must either have no target name space declared or have declared one that matches that of the including schema. The net effect is as if there weren't two separate schemas but only one.