基于元数据的解释型MIS的设计与实现

DESIGN AND IMPLEMENTATION OF METADATA-BASED TRANSLATED MIS

传统的MIS在设计实现时与具体的数据库结合紧密,应用程序往往是一种特定产品,灵活性和扩展性较差。为提高MIS的灵活性和扩展性,提出了一种基于元数据的解释型MIS的设计方法,通过定义一组符合一定规则的元数据,设计基于这种规则元数据的程序,使MIS主程序的运行不绑定特定的数据库表和字段,而是根据元数据动态实现,实现了MIS程序由元数据驱动,从而大大提高了MIS的灵活性和扩展性。

Traditional MIS combines with database closely on its designing and implementation,applications are usually the specific products with poor scalability and flexibility.To improve the flexibility and scalability of MIS,in this article we give a way of designing with regard to a kind of translated MIS based on metadata.In this way,the developers define a group of regulated metadata,and design main program based on these metadata,which enables MIS main program to run without the bound specific database tables and fields,but to run dynamically according to metadata.This achieves the MIS program being driven by the metadata,therefore the flexibility and scalability of MIS are significantly raised.