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INSTALLING AND CONFIGURING SQL A.BALAKUMARAN B.E -CSE

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INTRODUCTION TO MY SQL MySQL, the most popular Open Source SQL database management system, is developed, distributed, and supported by MySQL AB. MySQL AB is a commercial company, founded by the MySQL developers. It is a second generation Open Source company that unites Open Source values and methodology with a successful business model. My SQL is a fast, stable and true multi-user, multi-threaded SQL database server. SQL (Structured Query Language) is the most popular database query language in the world. The main goals of MySQL are speed, robustness and ease of use.

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Installing MySQL on Linux It is simple to install My Sql on linux using the RPM file 1. Become the superuser if you are working in your account. (Type "su" and the prompt and give the root password). 2. Change to the directory that has the RPM download. 3. Type the following command at the prompt: rpm -ivh "mysql_file_name.rpm" Similarly you can also install the MySQL client and MySQL development RPMs if you've downloaded them. Alternatively, you can install the RPMs through GnoRPM (found under System).

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We can check your configuration using the following command #netstat -tap Output Looks like below tcp 0 0 *:mysql *:* LISTEN 4997/mysqld MySQL comes with no root password as default. This is a huge security risk. You’ll need to set one. So that the local computer gets root access as well, you’ll need to set a password for that too. The local-machine-name is the name of the Kona link1 computer you’re working on. For more information see here #mysqladmin -u root password your-new-password #mysqladmin -h root@local-machine-name -u root -p password your-new-password #/etc/init.d/mysql restart

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4. Now we'll set a password for the root user. Issue the following at the prompt. mysqladmin -u root password mysqldata where mysqldata is the password for the root. (Change this to anything you like). 5. It is now time to test the programs. Typing the following at the prompt starts the mysql client program. mysql -u root -p The system asks for the the password. Type the root password (mysqldata). If you don't get the prompt for password, it might be because MySQL Server is not running. To start the server, change to /etc/rc.d/init.d/ directory and issue the command ./mysql start (or mysql start depending on the value of the PATH variable on your system). Now invoke mysql client program.

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6. Once MySQL client is running, you should get the mysql> prompt. Type the following at this prompt: show databases; 7. You should now get a display similar to: +----------------+ | Database | +----------------+ | mysql | | test | +----------------+ 2 rows in set (0.00 sec)

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Configuring Your Application After creating and testing the database, you need to inform your application of the database name, the IP address of the database client server, and the username and password of the application's special MySQL user that will be accessing the data. Frequently this registration process is done by the editing of a special application-specific configuration file either via a Web GUI or from the command line. You should always remember that MySQL is just a database that your application will use to store information.

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The application may be written in a variety of languages with Perl and PHP being the most popular. The base PHP and Perl RPMs are installed with Fedora Linux by default, but the packages used by these languages to talk to MySQL are not. You should also ensure that you install the RPMs on your MySQL clients to ensure compatibility.