Database requirement analysis of online ordering system

Demand analysis and project flow chart

1 Demand analysis
Students eat in the canteen , Sometimes you waste a lot of time choosing meals and queuing , Our online campus ordering system can save students' time and energy , Avoid the waste of canteen food , At the same time, let the students eat satisfactory food , Improve service quality and satisfaction with the restaurant .
The functional modules of the campus ordering system are ： Users use modules , The administrator module consists of two parts . The user use module can realize user registration and login 、 Browse and select dishes 、 Submit orders, view order related information and other functions . The administrator module can realize dish management 、 User management and order management .
2 Overall design block diagram

3 Database design
We are based on the basic requirements of the system and the division of system modules , For user login subsystem 、 The administrator logs in to the subsystem 、 Order subsystem 、 The dish classification subsystem carries out the specific database design , The data flow diagram formed in the demand analysis .
3.1 Design and division of system functions
The system is divided into the following subsystems according to the completed functions ： User login subsystem 、 The administrator logs in to the subsystem 、 Order subsystem 、 Dish classification subsystem . The functions of each subsystem are as follows ：
3.1.1 User login subsystem user login interface , It can realize the login of existing account users and the registration and login of new users , And get the user's dormitory number when the user logs in to facilitate delivery .
3.1.2 The administrator login subsystem is displayed in the administrator login interface , Administrators can view the dishes reported by users , Deliver according to the dishes .
3.1.3 The order subsystem is displayed in the order interface , You can settle the total consumption , And check the order placement time and estimated delivery time . 3.1.4 Dish classification subsystem Select the dishes on the meal selection page , You can increase or decrease the selected dishes , Generate final order .
3.2 Subsystem flow chart