境外地质资料管理系统中定制目录树的实现

在境外地质资料管理系统的数据管理和使用中,目录树可按数据处理过程、地质专业或数据类型等划分,但用户发生改变后,目录树则很难进行修改。鉴于此,采用Tree View控件表达关系数据库中目录树表,根据目录树表中记录的父子关系进行显示层和数据层的同步处理,实现了按照不同用户需求,可自由定制、调整目录树结构的方法,具有灵活、方便,易于更新、应用等优点,使境外地质数据在使用和应用中更便于管理和使用。

Realization of the customization of directory tree in the geological data management system abroad

During the process of managing and using geo-data in geological data management system, the directory tree can be classified according to data processing, geology, or data types; nevertheless, it is difficult to make modification after changing of consumer. In view of this disadvantage, the TreeView is adopted to control expression of directory tree in relational database tables. According to the table of contents directory tree records in the parent-child relationship, we could reach the synchronization processing between the presentation layer and the data layer, realize the method of free customize and modify directory tree structure by different consumer needs. This method has the flexible, convenient advantages, and it is easy to update applications as well as to use and manage geological data in practice.