ubuntu系统和windows系统双系统共用是用户喜欢使用的方式之一,而MySQL是一个小型关系型数据库管理系统,在Windows平台中常以WAMP方式搭配使用,在Linux平台中常以LAMP组合形式出现,下面的方法可以使得Ubuntu平台共用Windows平台中的MySQL数据库
双系统配置及MySQL数据库存储情境:Windows XP下d:\mysql\data中存有MySQL数据库,Linux系统为Ubuntu Server 9.10。双系统安装完毕,利用GURB启动到Ubuntu Server 9.10,以管理员身份登录。
1)并读写方式(RW)认方式挂载Windows中D分区至/media/wind。
2)更改/media/wind/mysql/data权限
sudo chow mysql:mysql /media/wind/mysql/data (其中两个mysql分别表示用户名及所在用户组)
3)更改/etc/mysql/my.cnf文件,更改其datadir
sudo nano /etc/mysql/my.cnf
将其中的 datadir = /var/lib/mysql
更改为
datadir=/media/wind/mysql/data
存盘
4)更改/etc/apparmor.d/usr_sbin_mysqld内容中,把其中的/var/lib/mysql都对应替换成实际存储位置
如上面的 /media/wind/mysql/data/
5)重启apparmor和mysql服务
sudo /etc/init.d/apparmor restart sudo /etc/init.d/mysql restart
我重启过程中我遇到一个拒绝访问的错误,重新执行第3)步中的更改配置文件操作,将文件中的user由mysql更改为root后成功,其原因是我的Windows下MySQL数据库的未对mysql用户授予访问权限。
总结:
希望本文介绍的Ubuntu与windows双系统下共用MySQL数据库的方法能够对读者有所帮助,更多有关linux系统的知识还有待于读者去探索和学习。

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

The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

The steps to build a MySQL database include: 1. Create a database and table, 2. Insert data, and 3. Conduct queries. First, use the CREATEDATABASE and CREATETABLE statements to create the database and table, then use the INSERTINTO statement to insert the data, and finally use the SELECT statement to query the data.

MySQL is suitable for beginners because it is easy to use and powerful. 1.MySQL is a relational database, and uses SQL for CRUD operations. 2. It is simple to install and requires the root user password to be configured. 3. Use INSERT, UPDATE, DELETE, and SELECT to perform data operations. 4. ORDERBY, WHERE and JOIN can be used for complex queries. 5. Debugging requires checking the syntax and use EXPLAIN to analyze the query. 6. Optimization suggestions include using indexes, choosing the right data type and good programming habits.


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