The thesis is dedicated to study and develop the NetworkDatabaseSystem for ship Information according to the practical demand of ship industry.
本文根据船舶工业的实际需要,研究和开发了船舶信息网络数据库系统。
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The second part discussed the theoretical knowledge and data models of DGNDBS; studied the feature, work model and main technique of the networkdatabasesystem.
The networkdatabasesystem is continuously intruded by all kinds of attacker, however the existing security technologies couldn't give protection very well to database system.