Replication for XML data is done within the transaction message just like any other relational column, so the maximum transaction message length puts a restriction on the size of XML being replicated.
像任何其他关系列一样，对XML数据的复制是在事务消息中完成的，因此复制的XML的大小将受到最大事务消息长度的限制。
Concurrency control in business transaction terms usually involves generating and maintaining locks on data stores, such as relational databases.
并发控制在业务事务术语中通常涉及生成和维护数据存储上的锁，例如关系数据库。
The relational databases also include the transaction ACID property (Atomicity, Consistency, Isolation, Durability).
关系数据库还包括事务acid属性(原子性、一致性、独立性、持久性)。
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