Research And Implementation About Drawing And Document Management System Based On Internet/Intranet

Along with the application of computer technology deeply into all kinds of realm increasingly, the design departments of the engineering design units and enterprises accumulated a lot of drawings and documents which existing in electronic form. Because these drawings and documents preserved dispersedly in every designer's computers and lacking of good method to manage them, these valuable resources were lost gradually and could not be used again, the advantage of CAD technology could not be brought to play efficiently. On account of these resources increasing continuously, it's very important to find a good method to manage, to share and to reuse them. This is the reason why Drawing and Document Management System (named System below.) becomes important increasingly.The management of drawing and document is not only presumed to scan, archive and query them statically, but also aimed at a design-oriented, dynamic system. We must find a solution to resolve the problems such as the definition and maintenance of the archives' structure, the security of drawing and document, the data consistency, the management of version and the query of archives. Around these problems, this paper discusses the solution in the Drawing and Document Management System of Wu Han Iron and Steel Design and Research Institute. The work that writer did shows as below:(1) After looking back the characteristic of Drawing and Document Management System used in each period and analyzing their defects, the writer brings forward the function and characteristic that a whole Drawing and Document Management System must possess at present.(2) After analyzing the new technique brought by the distributed application structure in each period that evolving synchronously with System, the writer puts forward a structure model of System based on XML and COM and discuss the advantage of the technique in solving the problem coming into being in System.(3) In this paper, the writer discusses the excellent merit of XML which behaved in improving the representation of Web page and resolves the problem that how to convertthe data in database into XML stream and convert the stream into the HTML again in order to simplify the interface and reduce the transmit flux in net.(4) In this paper, the writer discusses how to realize the reusing of code with the technique of COM component and imports the concept of layer-separated component which separates components into data components and business components to simplify the test and the maintenance of codes and reduce the quantity of client codes.At length, this paper discusses the function and the deficit of WDAMIS and brings forward the research direction in future.