平台管理技术，数据安全技术和多用户并发访问技术。
Platform management technology, including data security technology and multi-user concurrent visit technology.
当然，XML数据库也必须具备完善的事务处理机制，这对于XML数据库多用户并发访问时极其重要的。
Certainly, XML database must have a sound mechanism for transaction processing that is an extremely important to concurrent access for multi-user.
数据并发访问指多用户同时访问相同的数据。
Data concurrency means that many users can access data at the same time.
数据并发访问指多用户同时访问相同的数据。
Data concurrency means that many users can access data at the same time.
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