Changes

The most important thing to keep in mind when using XQuery Update is the Pending Update List (PUL). Updating statements are not executed immediately, but are first collected as update primitives within a set-like structure. At After the end evaluation of a the query, and after some consistency checks and optimizations, the update primitives will be applied in the following order:

Along with the Update Facility, a number of new error codes and messages have been addedto the specification and BaseX. All errors are listed in the[[XQuery Errors#Update Errors|XQuery Errors]] overview.

Please remember that the collected updates will be executed after the query evaluation.If All logical errors occur at this final stage, they cannot will be caught via try/catchraised before the updates are actually executed.