The system plays a crucial role in the client part of OSCAR, an object relational database management system. It includes two components: preprocess module and ESQL runtime library.
该系统是对象关系型数据库管理系统OSCAR客户端的重要组成部分，分为两部分实现：预处理模块和ESQL运行库。
With the combination of database technology and GIS application, the method of manage spatial data using object relational database technology will be the currently tendency.
随着目前数据库技术与GIS应用的结合，采用对象关系数据库来管理空间数据已表现出强大的生命力。
Proper care must be taken to ensure that object-relational database 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。
Proper care must be taken to ensure that object-relational database 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。
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