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Chapter 11. XML and Web Services > XML for Applications

XML for Applications

The discussion so far gives the impression that XML is closely related to the Web, but XML is equally valuable for internal use in applications.

XML Data Storage

XML is a candidate for storage of business documents. Many current systems usually store information from business documents (such as order forms) in a relational database, in which the parts of the document are broken into various columns and tables, or in an object-oriented database, in which the document itself stored as an object. With the relational approach, it is easy to search for information in any part of the document, but it is expensive to store or retrieve the whole object. In contrast, object-oriented databases make it easy to store and retrieve the entire document, but searching is generally more expensive. When business documents are represented in XML, the entire process can be simplified by storing the complete document in the database and also storing index fields in relational tables.


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