辅助视图 meaning in English
auxiliary elevation
auxiliary projection
auxiliary view
Examples
- 3 . updating the materialized views and auxiliary relations
利用更新值对每个辅助视图和物化视图进行更新。 - Deciding auxiliary relations in an up - down fashion according to simple views self - maintainability . 2
采用由顶向下的方法，确定辅助视图； 2 - However , not all the views defined by relation and group operations are self - maintainable , we must use auxiliary relations in data warehouse in order to self - maintain views
由于大多数视图不能自维护，为了实现视图的自维护，我们使用了辅助视图的方法。 - We show that the warehouse views can be made self - maintainable with the auxiliary views , which derived from the intermediate result of the view computation can be materialized in the warehouse . the incremental maintenance algorithm can implement warehouse real - time updating
文中介绍了一种利用视图计算的中间结果创建辅助视图，在数据仓库中进行实体化，计算实视图和辅助视图的精确变化，实现数据仓库的增量维护算法。 - If relevant , then checks whether it is concurrent incremental maintainable or self - maintainable . if the update satisfies self - maintenance , our mechanism queries auxiliary views ( instead of querying iss ) to avoid network transmission and make the materialized view consistent with underlying iss . the update which needs to maintain the view concurrently and incrementally can be handled by polec
当收到更新后， pmdvm方法首先用相关性对其检查，对不相关更新直接抛弃；对相关更新对其进行并发增量视图维护或自维护机制检查，对满足自维护的更新通过查询辅助视图（而不是查询数据源）来避兔网络传输和使实化视图与底层的数据源保持一致，对必须进行并发增量视图维护的更新由polec来处理。