Introduction - If you have any usage issues, please Google them yourself
This system is described in the book of basic GIS system (code set B) based on the expansion of vector graphics system functions and database functions such as development of a complete GIS system function modules and procedural framework. The database query functions and editing functions have expanded to achieve a more powerful query features and common database record editing. Realized any operational function of the database table. Achieved by the nature of the data query vector graphic elements as well as through the data table records are graphic elements of the bidirectional query on the data of various spatial statistical functions. Ti Gong through the vector graphics elements to achieve the painting WYSIWYG display database Jilu electronic forms capabilities, and combine multiple electronic forms of Yan Shi table function.