【文章內(nèi)容簡介】 he program runs in the paper can be overwritten. When the document is updated, the system will convert to the new moderate version. 4. ASP take the codebehind approach to the preparation of the code makes the code easier to prepare, structure more clearly, reducing the system development and maintenance of the plexity and the cost of. 1 System Development Principle The System Architecture Model of ASPbased Technology ASP is a threetier system structure: UI Layer, Business Logic Tier and data layer. UI layer is responsible for interaction with the user, receiving user input and serverside data from present to clients. Business Logic Tier is responsible for receiving requests from browser requests to the data layers and at the same time the results of the request sent to the browser. It consists of Web Forms, XML Web services and service position ponents. Web Forms which is the core of the application, it is presented to customers based on data and information as well as to respond to and deal with customers and display interactive Web form generated based on information and data. Data layers to manipulate data through the layer for business logic to provide data services, such as storing the results of data manipulation and return to the results of data retrieval. The principle of access to the database Connected with the database, provide the following three kinds of ways: through ODBC connected。 connected through OLEDB。 directly connected with the SQL Server. Application of three kinds of ways as a result of differences in levels, making the efficiency from low to high, high to low independence. Connected to the database for data processing, there are two kinds of ways, that is, through a Dataset to the isolation of heterogeneous data sources, and the other is a stream to read from the data source (Data Reader mode). Traditional application is to create a connection to the database, in the process is running the whole way to maintain connections to the design. taken disconnected mode data structure. When a browser requests a page to the Web server, the server to deal with this request, the requested page and send to your browser, and then connection was disconnected until the next browser request issued. Another innovation is the introduction of a data set (Dataset). A data set is the relationship between memory map to provide highspeed data buffer. Data set of data sources know that they can be adopted by the program or transferred from the data warehouse data were generated, to fill. Regardless of where the data acquisition, data sets are the same procedure through the use of templates to be operated, and it39。s potential to use the same data buffer. 2 Systems Functional Designs Systems Function Structures The news management system in Windows 2020 Server operating system platforms, Web server IIS, the database server for Microsoft SQL Server2020, development tools used in Microsoft Visual Studio. NET and DreamWeaver. Its work processes as follows: the user login through the authority to determine the general user can only browse, read and query information, registered users can be pleted in addition to the ordinary user, but also can enter information for news management module input, modify, and delete operations. In addition to registered users outside the system administrator can only be recorded on its own news operation for excision. Systems Function Characteristics (1) Simple, userfriendly: plete control of page layout, making information easier entry work。 many options including news categories, such as the source of departments only need to click the mouse can be pleted。 In addition, the followup message also appears allow users to clear their own operations. (2) Can be seen immediately: the handling of the press (including the entry, modify, delete) will be the corresponding column on the home page is displayed to immediate release, immediate results function. (3) Function: include mon site in all aspects of information management: information input, browse, delete, modify, search and other aspects, the full realization of the Web site of the realtime information management requirements. (4) To facilitate transplantation: for different enterprises, with some slight modifications need to be able to develop for