Study On Flexible Development Technology And Its Control Methods Of Management Information System

Management information system (MIS) is tight related with people's work and life, especially its changing requirement disturbs system developers and users now and then, MIS flexibility technology becomes more and more important.But study on flexibility is not profound. This dissertation proposes unique flexibility technology according to contemporary software science and declares flexibility measuring equations and dynamic control methods.This dissertation firstly introduces definition of flexibility and research context all over the world. Understanding flexibility, it claims flexibility is not an absolute concept but a relative one: flexibility is different according to defferent types of change. It devides types of MIS evolution and maintenance into four clusters and twelve sub-types according to following criteria of three kinds of changes: 1st is software, 2nd is code, 3rd is the customer-experienced functionality. This makes a foundation for more accurate MIS flexibility measuring. It proposes quantitive flexibility equations for different architectural styles, programming paradigms and design patterns. It gives an economic model of flexible MIS.This dissertation analyzes flexible MIS key concepts such as business logic, process unit partition, information architecture configuration, information extraction and decision support. Based on axiomatic design, the complexity of MIS is decreased. Applying independence axiom, reasonable design reduces couples among modules. We can design MIS on the basis of process chart reducing coding time and debugging time, ensuring module reliability and reusability. It explains the detailed steps of this method with concrete case.This dissertation analyzes component technology and distributed object computing, studies the relationship among MIS flexibility, flexible workflow system, and intelligent agent. It combines intelligent agent technology and workflow architecture. It creates a value model to assess three kinds of MIS architecture, including traditional MIS, MIS based on workflow, and intelligent workflow system. It explores cellular development methodology (CDM), an architecture-driven approach to flexible MIS development. CDM derives the development process and its architecture from the MIS architecture of the end product. The MIS development process is structured and customized as a network of cooperating cells. The network of configurable cells yield customisable, potentially distributed MIS development process which in turn produce MIS that is precisely tailored to user requirements. This dissertation also verifies CDM with a concrete case.This dissertation illustrates dynamic control theory. It clarifies following types of control methods found in flexible MIS development process: behavior control, outcome control and clan control. Several popular flexible processes are analyzed for control methods: extreme programming, synchronism and stabilization, rational unified process, and waterfall process. It explores the challenges of managing total system flexibility within the divided MIS life cycle.