全世界每天正在使用大量的 Perl/Tk 应用程序，包括生化模拟器、地图绘制程序、航班管理系统等。
Substantial Perl/Tk applications are in everyday use around the world, including a biochemical simulator, geographic mapping programs, a flight management system, and much more.
以数据库为依托，借助地理数据引擎，探讨并设计了对多源数据在数字地图出版系统中组织及管理；
Relying on database and geographic data engine discusses and designs the organization and management of multi-source data in digital map publishing system.
该软件包含了系统安全模块、地图操作模块、数据管理模块。
System security modules, map operation modules and data management modules are included in this software.
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