Heilongjiang Province, the power supply enterprise management information system security management subsystem - data planning the overall design
|School||Tianjin Polytechnic University|
|Keywords||Data planning Functional model Number of dig model Integrity constraints Commerce rules Coding|
Security management subsystem data plan practice of object , information systems planning theories and methods of data made ??a more comprehensive discussion of this article is assumed in the development of Heilongjiang Province, the power supply enterprise management information system data planning projects . The entire data planning process is divided into three phases: business research phase , the design phase of the functional model , data model design phase , where the business research is the basis of the functional model design and data model design , function model to solve the system to do what data model to solve the problem of how to do it . Based on my past experience and lessons of the development project , in order to facilitate future maintenance needs and convenience of programming into the member programming real view on the basis of existing data plan , research and development , on the basis of the completion of the three phases of the task , given integrity constraints and business rules of the system data model , the rich create coding system to system design and implementation . The subject of the research will not only help to improve the level of information systems development theory and for data planning practice work also has important guiding significance .