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Xquery updating

What is the most efficient way to modify XML values?To allow for precise modification of XML nodes and values, the XQuery XML query language employs an extension known as the XML Data Modification Language (DML).We can also insert any collection of nested nodes and values.If we want to designate a new project for employee ID #2, we can do the following: The newest employee now needs salary data.

We've looked at examples of the XML DML extension, using the modify() XQuery method.We incorporated the SQL variable '@i' (inside of a sql:variable() extension function), which was used to iterate the Employee nodes.Notice that the salary amount for employee # 4 was not updated, since that employee is in the Accounting department.We need to remove the description for the time being.Only employee #2 is working on this project, so we can run the following to remove the value: The salary amount has been updated.

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We introduced all three operational keyword sets: insert, replace value of, and delete; and used them to perform some of the more common XML modification operations.

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