quora system design

To design a lighting system in a certain place, a total of n Different Types of bulbs are required. Then input the voltage of each bulbs. V corresponds to the price of the voltage power supply. K. The price of each bulb. C. The quantity of such bulbs. l voltage. low bulbs can be replaced with high-voltage bulbs. Each type of bulbs only requires a corresponding power supply to achieve the minimum cost of the

Label:Requirements Analysis---scenariosSuppose you need to design a personnel management system for the company, and assign system login accounts to all leaders and employees. There are several requirements: 1.permission levels are different:company leaders can view all employee information after login, department leaders can only view the information of staff in

The company wants to record audit logs for some systems. These logs are not commonly used by our developers.ProgramFor example, logs recorded using log4j), but for the purpose of future use by the audit department, the log feature has strong business requirements. The architecture has been designed by other colleagues in the company. Although I am only doing some supplementary work, I am very interested in this proposition. Today I carefully considered such a business requirement, I think it is

Label: des style color use Ar data SP C R Vantage. Plant. Design. Management. system. v12.1.sp2-ISO 1dvd for short, it is a famous 3D factory design management system.(Plant Design Management System) is a 3D factory

Label:I. Interface designRegardless of the student, teacher landing interface is unified, according to the user name entered to determine what kind of interface to enter.After the student login interface:Teacher interface: After the teacher login to the course name interface, select the course to get the second picture.Two. Class diagram designThree. Database designCourses: Course number , classes, teacher number, time, teacher, capacity, prerequisitesTeacher: Teacher number , teacher's name, te

Q1,design an account SystemThe simplest is to find an example, such as the user system of Twitter.Consider what needs to be: 1,register/updata/remove.2,login/logout.3, balance/menbership.Consider what is most important in the requirements, what is most frequent: login/logout most frequent, but login than the Logout frequency should be much larger, so consider login to be able, in addition register is also v

ArticleDirectory Modules with permission Control Reading directory Introduction System features System introduction-Homepage System introduction-list page System introduction-Details page (form) System introduction-menu/button

This is an era of information explosion, every day people use the Internet, mobile phones, etc. to receive tens of millions of messages. With the phenomenon of the expansion of information is a problem of the times, people's eyes can not be in the vast and complex information before the focus. How to make it easy for people to see their own information and to bring aesthetic beauty into the task of visual information processing becomes a key problem. The function of satisfying visual information

Address: http://www.cnblogs.com/aganqin/archive/2013/06/12/3132944.html Problem:In system development, layout interface design is an important part. I used to develop MES at a party a company. I have seen a wide variety of system interfaces, including 100 people, there are nearly 100 styles, countless small systems are developed, and naming rules are messy. As a

The art of Linux kernel design: Graphic Design and Implementation of Linux operating system architecture The art of Linux kernel design: graphic design and implementation principles of Linux operating system architecture. The abil

　 Free advertising systems are diverse. What do they share in common? Which systems are reasonably designed? After summing up the precise advertising targeting technology on the Internet in the design of the advertising system, the author further studies the permission management design and structure design in the

Dota2 skill System Design Analysis and dota2 skill System Design The first two weeks have completed the new game skill system. Although it is flexible, it is much worse than Dota2's skill system

Scrum 3.8 Multi-fish ordering system development progress (feedback system design)1. Team Name: Crime Squad2. Team goal: Long-term management, accumulate customers fully prepared, waiting for the line3. Team slogan: unswervingly, the pursuit of perfection 4. Team selection: Restaurant to shop ordering system Web5.Sprin

[Django] design of the user permission Learning Series Self-owned permission management system design idea, django permission management system If you encounter permission operation problems when reading this article, please refer to the first two chapters of this series! Bytes This article describes the idea of design

Tomcat system architecture and Design Patterns, part 2nd: Analysis of design patternsThis two-part series studies the system architecture of Apache Tomcat Server and the many classic design patterns it uses. The 1th part analyzes how Tomcat works, and the 2nd section analyze