Data room Charging System Series 7: finished

Summary of the late data center Charging System: In August, Netease published a blog about the completion of the data center. The reason for this phenomenon is, after reading the original article, you will be able to understand the mystery. I also hope that you can find some problems through reading my original article. The source address of this article is m18034156361.blog.

Summary of the late data center Charging System: In August, Netease published a blog about the completion of the data center. The reason for this phenomenon is, after reading the original article you can know to retain a little mysterious, but also hope that you through reading my original write this article can find some problems, the source address of this article: http://m18034156361.blog.

Summary of the late data center Charging System: In August, Netease published a blog about the completion of the data center. The reason for this phenomenon is, after reading the original article, you will know ...... Keep a little mysterious, also hope that you through reading my original write this article can find some problems, the source address of this article: http://m18034156361.blog.163.com/blog/static/22346505220147114407650/

The data room charging system is a complete system after the student management information system. It is the first system that has no source code implemented using vb, it is also a system that will accompany us for the longest time. When I first started to access the data center charging system, I encountered a problem during installation. It took me a day to find out the root cause of the problem. In fact, the cause of the problem is very simple, it is very important to grasp the key points of the problem so that we can get twice the result with half the effort. The same is true for Data Center charging systems. Do not be scared by problems. Find the key to the problem and solve the problem from the key points. After completing the data center charging system, I found that it is actually very simple. below is what I think should be paid attention to in the data center charging system.

Stage 1: Preparation

1. Overcome Fear
No source code is available for the charging system of the data center for the first time, and the database must be built on its own. In addition, the user relationship of the system is relatively complex, and the data has been designed for reports and other things that have not been touched before. At the same time, the relationship between tables is also complicated. The problem of Designing Multi-table queries is a test for us. So the first thing we need to do is to overcome the fear and overcome it in our hearts. When we see so many forms, there will be a sense of fear first, and there is a kind of self-confidence. Can we make a small question? You can question for one minute, but the last answer is yes! Next we will start to access this system. How can we do this system well?

2. There is a view of consistency-continuous cutting. After the installation is complete, first check what functions are available. After learning about the functions, we need to establish the relationship between the table and each form, what are the conditions required for each function to be implemented? Draw a mind map so that you will not be confused... If you try to build a database yourself, you will need to build your own database in future studies. Therefore, when studying the data center charging system, you must cultivate your own capabilities in this regard, if you are lazy and do not want to create your own database, we recommend that you delete the data in the database. Only the login name and password of the Administrator in user_info table are available, in this way, when you click the function, you can easily find the changes in the database, in which table there are changes, some changes, status or data to add or delete, it won't confuse yourself.

Stage 2: Project Development ing

1. establish connections with future systems or in real life

1.1. After establishing contact with the student information management system to overcome fear, install the system. Many people told me that they do not know where to start. Learning is like a blind person's understanding. when building a data center charging system, you can break it down like a blind person. First, start from where you will, and look for the similarities between the data center Charging System and the student information management system, contact the student information management system. Login interface, regardless of the system, login interface is required, change the password and so on, we have encountered in the student information management system, so first look for these simple, then simple query. When I finished logging on to the system, it took a long time to get on and off the machine. Later, I really couldn't do it. I decided to let it go. After I typed another form, I went back, this is also true when you find that the server is on and off. Therefore, you don't have to stick to what you can't do now. Let's put it first, and wait until you get it done. It's easy to get it done and then look back. You will find that this is not very rare.

1.2 establish connections with real life. Learning to life and learning to life. All things in learning can be associated with real life. After we establish a connection with real life, we will have a deeper understanding of this system and will also improve our thinking. You can use actual examples to simplify the problem. For example, you can establish a connection between the data center charging system and Internet access through Internet cafes. If you treat it like this, it will be easy to analyze the common users, operators, and administrators in the process. First, we need to clarify the problem. If you have never been to an Internet cafe, you can combine it with the example of recharge your meal card. Keeping a clear mind is the key to a good computer room charging system.

2. We have implemented logic functions, but we do not pay attention to the details. However, these details often affect our implementation of a specific function. The privacy of thinking is best reflected when you go to the machine, check out and query combinations. If you do not consider a small detail, errors may occur. when you consider the problem, you need to consider many aspects, some functions may not only involve a table.

3. Don't constrain yourself. Sometimes you just need to implement the above functions. My own ideas are not reflected in the above. For example, when I was working on a student information management system, I did not think of beautifying the interface, because the student information system did not reflect beautifying the interface, when we arrived at the data center charging system, all the forms were beautiful, because the data center charging system was beautifying ...... Have your own ideas and do not constrain your own thinking. 3. When the maintenance work is completed for the first time, there must be many unsatisfactory aspects. This requires us to take the time to think about where we need to improve ourselves and carry out the work on the basis of completion. Find a system that is similar to your own progress. Two people will click on my system. I will look at your system, so that you can find out where your system is insufficient through comparison, you can also use the blogs of Shige, Shijie, to learn from their good things to improve your system. The above points are the points that need to be paid attention to when the data center charging system is used. The first time it was used to set up the data center charging system, it would take a short time to grasp the overall view. During that time, there were basically no forms typed and I was worried, after "working overtime", I thought about the form after I had to sharpen my knife and cut it down without mistake. I thought it was clear that the form would be easy to think about later. When I knocked on a single form, I took off its veil, that's all. It takes a lot of time to go up and down, check out, and combine queries and reports. In fact, there are few new things, such as going up and down, checking out, and combining queries, logically, it is enough. As for reports, only a control is added. Just use the previous method of installing the scroll wheel to register the control and add it to vb, as for the code that implements the function, it is also quite simple, as long as you are not scared by the computer room charging system you fantasized about. Conclusion: the contact between the fingertip and the keyboard completes the first system without source code. I think the biggest result is logical training, the importance of preparing knowledge networks, and the code standardization, because the codes of the login form are not standardized, vb will not respond in the text box from the focus to the password, and the code standardization will also be paid attention to. Finally, it is the emotional sublimation, I learned from the completion of the data center Charging System and the self-confidence and sense of accomplishment in the data center charging system. The first system to be recorded without source code!