如果仅仅意图提供查询和报表制作功能,那么带有正规(normalized)或非正规(denormalized)数据结构的ER模型就是最合适的。
If the intent is simply to provide query and reporting capability, an er model with a normalized or denormalized data structure would be most appropriate.
如果仅仅意图提供查询和报表制作功能,那么带有正规(normalized)或非正规(denormalized)数据结构的ER模型就是最合适的。
If the intent is simply to provide query and reporting capability, an er model with a normalized or denormalized data structure would be most appropriate.
应用推荐