XML存储结构在仿真数据库中的应用研究

为了解决飞行仿真数据库中复杂数据类型的描述及数据库表结构、表数据的的动态更新,实现系统的开放性,在仿真数据库系统中引入了XML存储结构.研究了XML元素数据与关系数据库元素的映射及相互转换,建立了XML存储结构数据模型,从而使用XML语言描述复杂工程数据.并应用XML灵活性、扩展性强的特点,设计开发了数据库表编辑器,讨论了动态数据模型的实现, 提高了数据库的通用性及开放性.应用实践表明,采用XML存储结构适应于各种不同信息的描述,简化了庞大数据库的复杂度,极大地强化了工程数据库中保存信息与处理信息的能力,提高了数据库的可维护性、可扩展性和系统的开放性.

Application of XML Storage Structure in Simulation Database

The XML storage structure is used in simulation database in order to describe the complex data type and realize dynamic update of table structure,table data and the system's opening. The mapping rule and conversion between XML and relation database are researched and the XML storage structure model is created to describe the complex engineering data by XML. Further a database table editor based on the good agility and expansibility of XML is designed, and the dynamic data model's realization is studied to improve the universal application of the database. The engineering practice has proved that XML storage is suited to describe different information and can reduce the complexity of huge database.The ability of engineering database for saving and disposing information is strengthened, and the agility,expansibility of database and system's opening are improved by using XML storage structure.