基于非规范化和数据字典的地学元数据管理

Management of Geoscience Metadata Based on Denormalization and Data Dictionary

针对目前比较主流的地学元数据,对其管理存在的查询、编辑繁琐,存储管理混乱,后续应用空缺等问题进行改进。拟通过非规范化和数据字典技术管理地学元数据,非规范化技术主要解除元数据XML文本形式的多层逻辑结构,将其转为符合关系数据库的关系模型,并通过该技术无损还原其元数据的逻辑结构。数据字典技术主要用于优化地学元数据的结构定义,方便在关系数据库中的操作。通过改进,使得地学元数据在查询编辑效率方面有了明显的提高。

For the mainstream geoscience metadata,propose some improvements about some problems in tedious query and editing,chaos storage management,subsequent application vacancies and so on. Using the denormalization and data dictionary technology to manage the geo-metadata,the denormalization technology is mainly released the form of multi-layered logical structure of metadata XM L text,converting it into line with the relational database relation model,and through the technique to restore the logical structure of its metadata non-destructively. Data dictionary technology is mainly used to optimize geoscience metadata structure definition to make operation more convenient in database. Through the improvements,the geological metadata has the obvious increase in efficiency of the query and editing.