下列关于分布式数据库系统的叙述中，哪个是不正确的？

A．提高了系统的可靠性和可用性

B．具有位置透明性、复制透明性和分片透明性

C．两阶段提交协议将此用于处理分布式死锁问题

D．数据复制是将片段或片段的副本分配在不同站点上的存储过程

The revision of the Uniform Customs and Practice for Documentary Credits is the sixth revision of the rules．It is the fruit of more than three years of work by (1) ．UCP 600 applies to any (2) when the text of the credit expressly indicates that it is subject to these rules．They are binding on all parties thereto unless expressly modified or excluded by the credit． (3) means the bank that advises the credit at the request of the issuing bank． (4) means the bank that issues a credit at the request of an applicant or on its own behalf．Article 14 describes the standard for examination of documents．Under UCP 600，the (5) must be made out in the same currency as the L/C．B/L may now allow transshipment，provided that the entire carriage is coved by one and the same bill of lading．

A．documentary bill

B．commercial invoice

C．commercial draft

D．pro forma invoice