mariadb

Khóa học miễn phí MariaDB – Create Database nhận dự án làm có lương

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MariaDB – Create Database

Creation or deletion of databases in MariaDB requires privileges typically only given to root users or admins. Under these accounts, you have two options for creating a database − the mysqladmin binary and a PHP script.

mysqladmin binary

The following example demonstrates the use of the mysqladmin binary in creating a database with the name Products −

[root@host]# mysqladmin -u root -p create PRODUCTS
Enter password:******

PHP Create Database Script

PHP employs the mysql_query function in creating a MariaDB database. The function uses two parameters, one optional, and returns either a value of “true” when successful, or “false” when not.

Syntax

Review the following create database script syntax −

bool mysql_query( sql, connection );

The description of the parameters is given below −

S.No Parameter & Description
1

sql

This required parameter consists of the SQL query needed to perform the operation.
2

connection

When not specified, this optional parameter uses the most recent connection used.

Try the following example code for creating a database −

<html>
   <head>
      <title>Create a MariaDB Database</title>
   </head>

   <body>
      <?php
         $dbhost = ''localhost:3036
         $dbuser = ''root
         $dbpass = ''rootpassword
         $conn = mysql_connect($dbhost, $dbuser, $dbpass);
      
         if(! $conn ) {
            die(''Could not connect: '' . mysql_error());
         }

         echo ''Connected successfully<br />
         $sql = ''CREATE DATABASE PRODUCTS
         $retval = mysql_query( $sql, $conn );
      
         if(! $retval ) {
            die(''Could not create database: '' . mysql_error());
         }

         echo "Database PRODUCTS created successfullyn";
         mysql_close($conn);
      ?>
   </body>
</html>

On successful deletion, you will see the following output −

mysql> Database PRODUCTS created successfully 
mysql> SHOW DATABASES; 
+-----------------------+ 
| Database              | 
+-----------------------+ 
| PRODUCTS              | 
+-----------------------+

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