How to install and configure a database server in Ubuntu?

@noemy.bosco 

To install and configure a database server in Ubuntu, you can follow these steps:

1. Install the database server: The most common database servers for Ubuntu are MySQL and PostgreSQL. You can install them using the apt package manager by running the following commands:

For MySQL:

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sudo apt-get update
sudo apt-get install mysql-server

For PostgreSQL:

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sudo apt-get update
sudo apt-get install postgresql postgresql-contrib

1. Secure the database server: After the installation, it is important to secure the database server to prevent unauthorized access. For MySQL, you can run the following command to secure the installation:

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sudo mysql_secure_installation

For PostgreSQL, you can edit the pg_hba.conf file to set the authentication rules.

1. Configure the database server: You can configure the database server to suit your needs by editing the configuration files. For MySQL, the configuration file is located at /etc/mysql/mysql.conf.d/mysqld.cnf, and for PostgreSQL, it is located at /etc/postgresql/<version>/main/postgresql.conf.
2. Create databases and users: Once the server is installed and configured, you can create databases and users to access them. For MySQL, you can use the mysql command-line tool to create databases and users. For PostgreSQL, you can use the createdb and createuser commands.
3. Test the database server: Finally, you can test the database server by connecting to it and running queries. For MySQL, you can use the mysql command-line tool, and for PostgreSQL, you can use the psql command-line tool.

That's it! You should now have a working database server installed and configured on your Ubuntu machine.