面向船舶维护保养的分布数据同步

分布数据的同步是船舶维护保养工作中的重要内容,是船舶营运公司及时掌控船舶营运情况的重要手段。面向船舶营运公司分布数据库（船端数据库与岸端数据库）,建立了一种船舶维护保养过程中的数据同步方案,说明了现有的数据同步方案不能针对船体结构保养、格式表达扩展性差,附件不能进行传输,安全处理机制不够完善等情况,论述了在维护保养流程中,同步数据的具体流向。同时,对数据同步过程中的主要技术问题,包括基于ADO.NET的XML同步文件表达、增量同步文件处理、同步附件压缩处理、并发及死锁的安全处理等进行了说明。

A Design Solution of Ship Maintenance-Oriented Distributed Data Synchronization

Synchronization of distributed data is of importance to ship maintenance,which is an efficient means required for ship operating company to access real-time information of ship operation status.This paper is to give a kind of data synchronization solution for ship maintenance based on the distributed database（both ship-based database and shore-based database） of ship operating company.The disadvantages of existing data synchronization such as failure of addressing the hull structure maintenance,poor extension of format expression,untransmittability of attachment and insufficient security handling mechanism are presented.The flows of synchronized data specific for maintenance process are also examined.In addition,the main technical issues with regard to the existing data synchronization are investigated,including expression of ADO.NET-based XML synchronization files,processing of incremental synchronization documents,synchronization attachments compression,security handling of concurrent and deadlock,etc.