計算機專業(yè)外文翻譯--asp外文翻譯+原文

1、ASP 外文翻譯+原文 xinxiasd1ASP ASP外文翻譯 外文翻譯+原文 原文ENGLISHE：Develop Web application program using ASP the architecture that must first establish Web application. Now in application frequently with to have two: The architecture

2、of C/S and the architecture of B/S. Client/server and customer end / server hold the architecture of C/S. The customer / server structure of two floor. Customer / server ( Client/Server ) model is a kind of good softwar

3、e architecture, it is the one of best application pattern of network. From technology, see that it is a logic concept, denote will a application many tasks of decomposing difference carry out , common completion is enti

4、re to apply the function of task. On each network main computer of web site, resource ( hardware, software and data ) divide into step, is not balanced, under customer / server structure, without the client computer of r

5、esource through sending request to the server that has resource , get resource request, so meet the resource distribution in network not balancedness. With this kind of structure, can synthesize various computers to coo

6、perate with work, let it each can, realize the scale for the system of computer optimization ( Rightsizing ) with scale reduce to melt ( Downsizing ). Picture is as follows: It is most of to divide into computer network

7、application into two, in which the resource and function that part supports many users to share , it is realized by server; Another part faces every user , is realized by client computer, also namely, client computer is

8、 usual to carry out proscenium function , realizes man-machine interaction through user interface , or is the application program of specific conducted user. And server usually carries out the function of backstage sup

9、porter , manages the outside request concerning seting up, accepting and replying user that shared. For a computer, it can have double function , is being certain and momentary to carve to act as server , and again beco

10、mes client computer in another time. Customer / server type computer divide into two kinds, one side who offers service is called as server , asks one side of service to be called as customer. To be able to offer servi

11、ce, server one side must have certain hardware and corresponding server software; Also, customer one side must also have certain hardware and corresponding customer software. There must be a agreement between server and

12、 customer, both sides communicate according to this agreement. Apply customer / server model in Internet service , the relation between ASP 外文翻譯+原文 xinxiasd3Under the three-layer architecture of Browser/Server, express

13、layer ( Presentatioon ) , function layer ( Business Logic ) , data layer ( Data Service ) have been cut the unit of 3 relative independences: It is the first layer of to express layer: Web browser. In expressing layer

14、contain system show logic, locate in customer end. It's task is to suggest by Web browser to the certain a Web server on network that service is asked , after verifying for user identity, Web server delivers needed h

15、omepage with HTTP agreement to customer end, client computer accept the homepage file that passed , and show it in Web browser on. Second layer function layer: Have the Web server of the application function of program

16、 extension. In function layer contain the systematic handling of general affairs logic, locate in Web server end. It's task is the request concerning accepting user , need to be first conducted and corresponding to e

17、xpand application program and database to carry out connection , passes through the waies such as SQL to database server to put forward data handling to apply for, then etc. database server the result of handling data s

18、ubmit to Web server, deliver again by Web server to return customer end. The number of plies of 3th according to layer: Database server. In data layer contain systematic data handling logic, locate in database server en

19、d. It's task is to accept the request that Web server controls for database, realization is inquired and modified for database , update etc. function, submit operation result to Web server. Careful analysis is been e

20、asy to see , the architecture of Browser/Server of three-layer is the handling of general affairs of the two levels of structure of Client/Server logic modular from the task of client computer in split , from the first f

21、loor of individual composition bear the pressure of its task and such client computer have alleviated greatly, distribute load balancedly and have given Web server, so from the structural change of Client/server of orig

22、inal two floor the structure of Browser/Server of three-layer. This kind of three-layer architecture following picture shows. This kind of structure not only client computer from heavy burden and the requirement of per

23、formance that rises continuously for it in liberation come out , also defend technology people from heavy maintenance upgrading work in free oneself. Since client computer handles general affairs , logic partial minutes

24、 have given function server, make client computer right off “ slender “ a lot of, do not take the responsibility for handling complex calculation and data again visit etc. crucial general affairs, is responsible to sho

25、w part, so, maintenance people do not rush about again for the maintenance work of program between every client computer, and put major energy in the program on function server update work. Between this kind of three-l

26、ayer structural layer and layer, the mutually independent change of any first floor does not affect the function of other layer. It has changed the defect of the two levels of architecture of Client/Server of tradition