| Along with the technical research of Internet, and the CERNET2 is apply in the modern long range education to practice gradually, the network of the high bandwidth, high speed rate, high credibility will educate and can provide for the long range the more high-quality education service creates more opportunities and possibility. The containment see, audio frequertcy etc. the multi-media lesson piece of the big capacity information object, have already been make use of in the long range education to practice extensively, and have to the whole service quantity with educational long range a promote very greatly. But is very big because of a document of lesson capacity of now, the customer wants to browse these lessons piece, need to carry up and down from the website first, then then can broadcast to take a look at, if change the location of the study, then needing to be download again, very trivial, the efficiency is lowly. For the sake of the convenient customer can at any one time, location all the ability is convenient on-line to browse the lesson piece, streaming media technique to have already is been apply in the sound, video frequency extensively now on-line to broadcast.What this text study is the objective demand of the oneself development that aims at the school, building up in the school of streaming media lesson piece to order to sow the system. The establishment of that system manages the level to the lesson piece of the exaltation school, norm teacher the lesson piece creation, convenient student data search, on-line browse the lesson piece, raise the teaching quantity to rise the important function.This text introduces the usage present condition and topics of the multi-media lesson piece to choose a background and meanings first, then put forward the development to streaming media lesson piece viability assessment that orders to sow the system, putting forward the total project design that the video frequency orders to sow the system, thissystem from three statures system --- management sub- systems, theserver sub- systems and order to sow the sub- system to constitute. In system set up the mold process, carry on the need analysis first, this is a key step that decide the system and can meet the customer need, the quality of that stage affects the degree of progress and the quantity of the design directly. Need the analysis mainly is a definition to use the example, carrying on the description to the main function of that system, thus making sure the function request of the system, main applied in this part is to use a diagram, want that the detailed earth's surface shows various relation of the system with a diagram. The next in order what to carry on is a design, designing to is divided into the structure design and detailed designs generally. This part mainly includes the definition to wrap, describe the relativity and basic correspondence mechanisms of wraps. The attention wants to reduce related two righteousnesseses and connects a people's design with customer. What to carry on again is a realization, the UML advantage can get the substantial body in this process now:The diagram that make use of the environment that the Rational ROSE provide to design ex- several step carries on the analysis, then can convert the deluxe language that oneself acquaint with, and carry on the editor in deluxe language, we can see the UML in the environment of the high class language the structure frame of the program design that the diagram conversion becomes the system.And, while carry on that system's expand need only fore carry on change in two diagram for designs, thus change the procedure frame, changed the tradition thoroughly to change the complexity and latent risks brings in the design. Still introduced the function mold piece of this system constitute in addition and need of various server procedure. Give finally the detailed function introduction of the system each mold piece and carry out the method. |
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