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Working with XML
Developing with XML in OpenEdge : Developing XML-enabled ABL applications with DOM : DOM limits

DOM limits

The general limits of DOM include:
*The entire document must be parsed before the tree is available to the application.
*You cannot load a subset of the document.
*Because the whole tree must exist in memory, it may not be suitable for handling very large XML documents.
*A single error in the XML file may prevent the document from being loaded. This limit makes DOM less attractive for use cases where XML is being retrieved in a stream rather than as a static document.