My E-business Fairy.NET文档发布--系统设计介绍

Windows XP、.NET Framework、IE6.0
Hardware
Minimum configuration：Pentium II 233,64M memory，4.3G hard disk，4M display memory ，8 speed CD-ROM，Monitor，56k modem。
Commendatory configuration：Pentium III 800,256M memory，40G hard disk，16M display memory，50 speed CD-ROM，17 Monitor，ADSL Broad Band。
2.3 Requirement summary
see also the document of Requirement Specification.

2.4 Conditions and limit
Develop with Microsoft Visual Studio.NET 2003 Enterprise Edition Final Beta.

III General Design

3.1 Processing Flow

As diagraph one showed, data need to be processed by system kernel, web service, system client(including web site and Windows client), while receiving data, the data inputted by user will be firstly sent to web service after being encrypted for validating, then the processing will be handed to system kernel , at last the kernel will do specifically operations to the data base. While data coming out, the kernel can get corresponding information from data base according to the request of web service, then the data will be sent to client after being encrypted, the client will process the received data and show it to customer. We will explain the flowchart using user sign in as example:
   The user fills in his or her user name and password, then click “Sign In” button. The client will send received data to web service of My E-business Fairy.NET using http protocol. My E-business Fairy.NET web service firstly validates received data and check if user name is null. If not, the web service will send a user information-querying request to system kernel. System kernel queries the corresponding record in the database according to the request of web service. If the record is in existence, the kernel returns the record information, if not, returns null. After receiving data returned from the system kernel, My E-business Fairy.NET web service compares the password returned from the database and the password inputted by the user. If they are the same, My E-business Fairy.NET web service will send the validating passed information to the client. If not, it will return error. If any exception occurred, the system will report the exception to the customer.
3.2 General Structure & Design of External Model

As show in the picture below:

IV Interface Design

4.1 User interface

V Structure Design

5.1 Logic structure design
 Please see the <<logic structure design>>.

5.2 Physics structure design

My E-business Fairy.NET uses SQL Server 2000 to save data. The Data file will be appointed （*.MDF）when installing the database. The system will access data by ADO.NET.

VI Runtime Design

6.1 Control of runtime

VII Design of Exception transaction

7.1 Information of sending out error: Please see the Test Report
7.2 Countermeasure of Dealing with Errors

7.2.1 Explanation of technology in support

My E-business Fairy.NET’ s service is bases on SQL Server 2000’s mechanism. The DBA of My E-business Fairy.NET can prepare system database of My E-business Fairy.NET regularly and recover it when needed.

7.2.2 Illumination of lower technology effect
    If there are some errors which might lead to system manager ineffective, My E-business Fairy.NET’s  DBA can connect with SQL Server directly and carry through handwork and repair it.

VIII Security Design

The security of My E-business Fairy.NET is mainly like this:

l       User's Identity Validation: Guarantee that each user can only control his own data.

l       User's system is separated form the administrative system.

l       Historical record: Write down the important operations of the user and administrator

l       Web service is isolated from system kernel

l       SQL Server proves safety: Guarantee that the database is only interviewed by authorized users.