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Course Introduction：This article presents a method to retrieve a hierarchical representation of categories and sub-categories from a MySQL database using PHP. The adjacency list model and a PHP script are utilized to construct a nested HTML unordered list (UL) that mirr

2024-10-24 comment 0  406

Course Introduction：Optimizing database schema design in MySQL can improve performance through the following steps: 1. Index optimization: Create indexes on common query columns, balancing the overhead of query and inserting updates. 2. Table structure optimization: Reduce data redundancy through normalization or anti-normalization and improve access efficiency. 3. Data type selection: Use appropriate data types, such as INT instead of VARCHAR, to reduce storage space. 4. Partitioning and sub-table: For large data volumes, use partitioning and sub-table to disperse data to improve query and maintenance efficiency.

2025-04-30 comment 0  758

Course Introduction：Retrieving Images from MySQL Database and Displaying in an HTML Image TagQuestion:In PHP, you've created a MySQL database with a table that...

2024-12-14 comment 0  829

Course Introduction：Combining Multiple Table Searches in PHP with MySQL and a KeywordYou have a database with three tables: messages, topics, and comments. Each table...

2024-11-12 comment 0  1057

Course Introduction：This article presents a code example in PHP to connect to a MySQL database, execute a query to retrieve data from a "employee" table, and display the results in an HTML table. It highlights the use of PHP functions for database connection a

2024-10-25 comment 0  876

Course Elementary  13744

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82260

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13130

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

Course Elementary  24578

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.

Course Elementary  27436

Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.