The design principle and method of database in a road surface management are described. They include design skill of databasestructure and application program.
本文探讨了路面管理系统中的数据库设计原理与方法,内容包括数据库结构设计与数据库应用程序的设计技巧。
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A derived data type is a derivative or structure of existing base types or other derived types.