Summary

In this chapter you learned that:

• A native XML database can be a database in itself.

• An XML data type is a native XML database all by itself.

• A simple native XML database can be constructed using simple XML.

• Schema-less native XML databases are schema independent and less restrictive .

• A schema-dependent native XML database does not require a schema.

• Many XML documents become collections of XML fragments in a native XML database.

• Indexing native XML databases involves data (values), metadata (elements and structure), or collections of XML documents.

• Using XSL and the XML DOM is bad for performance.

• Document-centric XML is not programmable and is stored as is.

• Data-centric XML is programmable.