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Appendix B     Getting Started with MySQL

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[root@laptop]# 

As you may have figured out, there are three files related to each table in the data 

base. To find out how many databases are present on your system, just list the directo 

ries under 

/usr/lib/mysql

.

Basic MySQL Commands

This section presents some very basic MySQL commands. These commands are

required to do basic operations with the database.

Creating a Database

First of all you have to login to create a database. You can login as user  root  to

MySQL server as shown below. This root user is not the Linux root user. It is related to

MySQL database only.

[root@conformix /root]# mysql  u root

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 1 to server version: 3.23.36

Type  help;  or  \h  for help. Type  \c  to clear the buffer

mysql>

At the mysql> prompt, you can use MySQL commands. The following com 

mand creates testdb.

mysql> create database testdb;

Query OK, 1 row affected (0.01 sec)

mysql>

When you create a database, a directory is created under /var/lib/mysql to

store database files. In this case the name of the directory is /var/lib/mysql/

testdb.

Displaying a List of Databases

At the command prompt, you can use the show databases command to list

available databases.