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.

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