By using of middleware, TSQL2 language and Object-Relationaldatabase, we develop a spatiotemporal middleware.
采用对象关系数据库、中间件技术、TSQL2语言设计了时空处理中间件。
2
Proper care must be taken to ensure that object-relationaldatabase mappings are correct, and ideally the code should be designed to minimize the changes necessary when requirements change.
必须注意确保对象到关系数据库映射的正确性，理想情况下，应该将代码设计成在需求变更时所需的更改最小。
3
This is typical of frameworks that map object models to relationaldatabase models.