Update transactions first read a specific document based on an XQuery predicate, and then use it to update the original copy of that document in the database.

更新事务首先根据一个XQuery谓词读取一个特定文档，然后使用它更新数据库中这个文档的原副本。

youdao

Update transactions first read a specific document based on an XQuery predicate, and then use it to update the original copy of that document in the database.

更新事务首先根据一个XQuery谓词读取一个特定文档，然后使用它更新数据库中这个文档的原副本。

youdao