The Research And Implementation Of The Data Structure And Access Control Method For The Domain Data Model

Under the tendency of informatization prompting industrialization, enterprise Management Information System (MIS) has a vast market demand. General data model cannot carry out the pointed organization and management of data according to the characteristics of enterprise information. As a result, many functions have to be implemented in application layer during the development of enterprise MIS, which reduces the efficiency of development greatly. Under this background, a special data model named Domain Data Model comes forth, which is suitable for enterprise MIS and fits the characteristics of enterprise information.Firstly, the background of this subject is analyzed, and then the correlative knowledge and research status is introduced. After summarizing the characteristics of enterprise information, by combining the concept of domain and data model, this thesis introduces the concept of Domain Data Model.Secondly, the formalization description and graph representation of the data structure of Domain Data Model is given out in this thesis. Also, the expression and operation of domain relation is presented. Extending proposed NIST standard for RBAC, this thesis brings forward RBACinDDM, and gives out an access control method based on domain relation.At last, this thesis introduces the design and implementation of DDBMS prototype in detail. The implementation of DBMS prototype validates the feasibility of domain data model. And the realization of a demonstration is introduced, which demonstrates the functions of DDBMS prototype and the practicability and validity of Domain Data Model.From the point of view of data model, this thesis looks for a method of developing MIS efficiently, which is an intrepid attempt to optimize the...