一、首先是在数据库中建立工程需要的表;
二、然后,配置对应文件:
在工程目录下yiiProject/protected/config/main. php 。在50行定义了db应用组件,下面后一段注释掉了的mysql的 链接 配置项,我们将未注释的db注释掉,然后打开mysql链接代码并填写相关信息即可完成mysql链接配置项。
即,把下面代码
'db'=>array( 'connectionString' => 'sqlite:'.dirname(__FILE__).'/../data/testdrive.db', ), // uncomment the following to use a MySQL database/* 'db'=>array( 'connectionString' => 'mysql:host=localhost;dbname=myemail', 'emulatePrepare' => true, 'username' => 'root', 'password' => '123', 'charset' => 'utf8', ),*/
改为:
/* 'db'=>array( 'connectionString' => 'sqlite:'.dirname(__FILE__).'/../data/testdrive.db', ), */ // uncomment the following to use a MySQL database 'db'=>array( 'connectionString' => 'mysql:host=localhost;dbname=myemail', 'emulatePrepare' => true, 'username' => 'root', 'password' => '123', 'charset' => 'utf8', ),
三、 在工程目录下yiiblog/protected/config/main. php ,在配置文件的21行,将模块配置里的gii部分去掉注释即可。在红色框里填写一个密码,使用gii的密码。
'modules'=>array( // uncomment the following to enable the Gii tool 'gii'=>array( 'class'=>'system.gii.GiiModule', 'password'=>'123', // If removed, Gii defaults to localhost only. Edit carefully to taste. 'ipFilters'=>array('127.0.0.1','::1'), ), ),
四、接下来在 浏览器 中访问gii模块即可,访问路径:http://localhost/
yiiProject
/index.php?r=gii,输入红色框中定义的密码即可进入gii模块。脚手架页面的首页显示脚手架提供如下功能:
下面就可以生成对应数据库表的model类和其他模块了。

InnoDBBufferPool reduces disk I/O by caching data and indexing pages, improving database performance. Its working principle includes: 1. Data reading: Read data from BufferPool; 2. Data writing: After modifying the data, write to BufferPool and refresh it to disk regularly; 3. Cache management: Use the LRU algorithm to manage cache pages; 4. Reading mechanism: Load adjacent data pages in advance. By sizing the BufferPool and using multiple instances, database performance can be optimized.

Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

MySQL is worth learning because it is a powerful open source database management system suitable for data storage, management and analysis. 1) MySQL is a relational database that uses SQL to operate data and is suitable for structured data management. 2) The SQL language is the key to interacting with MySQL and supports CRUD operations. 3) The working principle of MySQL includes client/server architecture, storage engine and query optimizer. 4) Basic usage includes creating databases and tables, and advanced usage involves joining tables using JOIN. 5) Common errors include syntax errors and permission issues, and debugging skills include checking syntax and using EXPLAIN commands. 6) Performance optimization involves the use of indexes, optimization of SQL statements and regular maintenance of databases.

MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA


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