Computer room charge system-familiar with understanding

Computer room charge system is a machine room for the operating system, mainly for the administrator, in this software will be the administrator (Teacher/user) divided into general users, operators, administrators three levels. And the use of the computer room for the students are divided into temporary users and fixed users.

The administrator (Teacher/user) uses his own userid and pwd to log in to this room fee system software, where the administrator's level is displayed as: Administrator

> Operators > General users, so different levels of people operate with different permissions. General Users

The student account can be:

View Balance view on-machine record Recharge record query on machine Status View Change Password and exit for UserID

operator

Usage rights are increased on a general user basis:

The operation of the students: registration (Student registration card number), recharge, return card, student basic information maintenance, students on the machine statistics query operator Operation Inquiry: Collect the amount of inquiry, return information query, operator work record

Administrator

On the basis of the above two are added:

Checkout: summary of operator actions; Delete and add User: Modify/Add operator, general user, Administrator; Basic Data setting: Amount data setting; the teacher on duty; the operator, administrator, or general user who is in use (the administrator (Teacher/user) who does not quit in the Worklog_info table) Daily statement, weekly statement bill: Computer room Revenue Summary

When we log in, we will see the interface for students to use the card number on the machine, also use this interface to the machine.

The computer room system involves 11 data tables, using the relationship between the data tables to implement the above functions, for the specific form of display use

Which tables, tables and how to use the combination, the most important is the amount of logical relationship, and so is logical thinking to learn.