Research on the method of data extraction based on category

Existing enterprise management information system database design commonly uses relational database management mode. This organization within the enterprise rich and diverse types of data is simplified as a two-dimensional table. This approach has limitation. In this paper, for the data organization, we propose to use category theory. Taking data as an object, by defining data relationships through the morphisms relationships, we can put forward a category data model. Then using the chart launch operations, we propose a category-based data extraction method. Finally, this paper illustrates concrete details by an example.