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XML is often used today as a data export and exchange format. In such cases, you might deal with a feed of XML records; sometimes, if this feed, is too long, there are performance problems importing it into another system. As such, you might want to produce only an incremental feed--that is, one that only includes items that have changed. This article presents a collection of simple techniques that you can combine into a system for more digestible feeds containing only updated records.
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Fast Incremental Updates of XML Records
http://www.ibm.com/developerworks/xml/library/x-increfeed.html
Ogbuji, Uche
IBM
2007
Abstract: XML is often used today as a data export and exchange format. In such cases, you might deal with a feed of XML records; sometimes, if this feed, is too long, there are performance problems importing it into another system. As such, you might want to produce only an incremental feed--that is, one that only includes items that have changed. This article presents a collection of simple techniques that you can combine into a system for more digestible feeds containing only updated records.
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