For details about how to build a website using PHP in a Linux operating system-Linux Enterprise Application-Linux server application, see the following. How can we build a news system? A complete news system includes not only news interfaces for browsing, but also powerful functions of control and background management. How can we schedule the allocation of sub-functions in these functions? The following describes the configuration control of each function. The implementation of the news system is simple, but it is also very complicated.
The news system can be divided into three parts: the Administrator logs on to the system, the news management system, and the user browsing system. The entire process is simple:
2. Locate the problem --> log on to the Management System --> edit and modify the news
The above process seems simple, but it is not so simple to implement. This is a system development that is far more complicated than the implementation of the message board, but the basic operation principle is the same as that of the message board. The top priority of the news publishing system lies in the database planning and management system implementation.
What is news now: News classification and information ontology. The two items in the database package letter can be implemented in one data table, but they are not economical. Therefore, we can use two data tables to store the content separately, and one specifically stores the news classification, another ontology is used to store information. How can we call this function to share two tables? Table join is used to solve this problem (this section does not introduce this knowledge. You can refer to the database-related knowledge and obtain the most valuable knowledge from your own efforts, right ?)
The following describes how to implement the management function:
1. First, publishing news
This is a combination of a series of submission forms. Here there are two categories: creating news categories and publishing news; creating news categories, and then publishing relevant news in each category, easy! This is not the case. Think about how all the information ontology is concentrated in a data table and how to distinguish information classification. The table association mentioned above is very important, of course, this method is not required. Creating an independent table for each category can solve the problem, but is it cost-effective? What about maintainability and scalability?
The call of news classification and information ontology causes trouble. Right, the solution is to use table Association.
2. Editing, modification, and deletion Problems
This is the basic application of php + mysql knowledge. It is not difficult to implement these functions. I will not introduce them much here, but note that when you change or delete a category, how can we process the information ontology under this category? Because table Association is used, these functions are processed in a table.
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