The article plans to combine POWERBUILDER language, if why use a system in traditional C/S,summarize in the center build attributive management system effectively.
What is meant by attributive management system? The visit of the person that how to control an operation to use namely to software function and systematic data each respects of attributive. Traditional C/S uses a system, it is process of “ downstage application more tiring-room database expresses ” two parts, decided we consider attributive management system to want to consider the content of two respects necessarily so:
1, the user is in downstage functional attributive: Namely this user can use what menu or window function, for example: Zhang San can service data types a function, cannot use management to examine and approve a function;
2, the functional attributive of user backstage: Namely what can this user have to read to library watch, take visit limits of authority, for example: Zhang San reads attributive only to X_table watch, did not write attributive;
Whether are management of afore-mentioned two respects limits of authority adequate? The answer is negative, because from application angle considers, still need to visit attributive to undertake controlling to the data of the user, for example: Zhang San belongs to A substation, li Si belongs to B substation, zhang San, Li Si types a data each, so the data logging that apparent when inquiry Zhang San can inquire to to its he is typed only, and the data logging that does not allow its to inquire Li Silu to enter, perhaps can inquire only and do not allow to revise, this is accordingly derivative the attributive management content of tripartite face:
3, the user visits attributive in applied data: Namely this user can is opposite what data has what visit limits of authority;
Our one by one understands the attributive administration that how achieves 3 afore-mentioned respects below:
1, downstage function attributive:
Speak of downstage function attributive, we should build below a few concepts:
Post: It is the working classification that shows the user is specific and responsible, be like: Data types hillock, writ to examine and approve hillock, system to safeguard hillock to wait;
Function: It is the software function that shows the user can be used, can be controlled through menu or window, but because the window connects constant to occupy among a system,measure giant, control user uses what window not quite actual, accordingly we normally menu is controlled can;
Work number: It is the user ID that shows specific user logs onto systematic place to use;
The correlation of 3 afore-mentioned concepts is as follows:
A post is OK and many more corresponding functional menu;
Menu of a function is likewise OK and many more corresponding post;
Number of a work can belong a post only;
Then we can design the following user to log onto flow:
(1) after user ID logs onto a system, read take corresponding user watch to examine its to be in post;
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