diff --git a/src/Config/DefaultConfiguration.php b/src/Config/DefaultConfiguration.php
new file mode 100644
--- /dev/null
+++ b/src/Config/DefaultConfiguration.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace Nasqueron\SAAS\PhpBB\Config;
+
+class DefaultConfiguration {
+
+    ///
+    /// Sites repository
+    ///
+
+    public static function getSqliteRepositoryFilename() : string {
+        return getenv("SAAS_SITES_DB");
+    }
+
+    ///
+    /// MySQL database
+    ///
+
+    public static function getMySQLDatasourceName() : string {
+        $info = self::getMySQLConnectionInformation();
+
+        return "mysql:host=$info[host];port=$info[port];charset=utf8";
+    }
+
+    public static function getMySQLConnectionInformation() : array {
+        // There are three scenarii we test to get information:
+        //
+        //   1.  Explicit preferences given in environment or .env
+        //   2.  MySQL Docker container linked with `--link phpbb_db:db`
+        //   3.  MySQL development default configuration
+
+        return [
+            'host' => $_ENV['DB_HOST'] ?? $_ENV['DB_PORT_3306_TCP_ADDR'] ?? 'localhost',
+            'port' => $_ENV['DB_PORT'] ?? $_ENV['DB_PORT_3306_TCP_PORT'] ?? 3306,
+            'user' => $_ENV['DB_USER'] ?? 'root',
+            'pass' => $_ENV['DB_PASS'] ?? $_ENV['DB_ENV_MYSQL_ROOT_PASSWORD'] ?? '',
+        ];
+    }
+
+}
diff --git a/src/Runner/TasksMap.php b/src/Runner/TasksMap.php
--- a/src/Runner/TasksMap.php
+++ b/src/Runner/TasksMap.php
@@ -5,11 +5,13 @@
 use InvalidArgumentException;
 
 use Nasqueron\SAAS\PhpBB\Tasks\BootstrapSqliteRepository;
+use Nasqueron\SAAS\PhpBB\Tasks\CreateDatabase;
 
 class TasksMap {
 
     public static function getMap () : array {
         return [
+            'sites:createdb' => CreateDatabase::class,
             'sites:bootstrap' => BootstrapSqliteRepository::class,
         ];
     }
diff --git a/src/SitesRepository/Repository.php b/src/SitesRepository/Repository.php
--- a/src/SitesRepository/Repository.php
+++ b/src/SitesRepository/Repository.php
@@ -4,4 +4,6 @@
 
 abstract class Repository {
 
+    abstract public function get (string $id) : Site;
+
 }
diff --git a/src/SitesRepository/Site.php b/src/SitesRepository/Site.php
new file mode 100644
--- /dev/null
+++ b/src/SitesRepository/Site.php
@@ -0,0 +1,121 @@
+<?php
+
+namespace Nasqueron\SAAS\PhpBB\SitesRepository;
+
+class Site {
+
+    ///
+    /// Private members
+    ///
+
+    /**
+     * @var string
+     */
+    private $id;
+
+    /**
+     * @var string
+     */
+    private $host;
+
+    /**
+     * @var string
+     */
+    private $databaseUser;
+
+    /**
+     * @var string
+     */
+    private $databasePassword;
+
+    /**
+     * @var string
+     */
+    private $databasePrefix;
+
+    /**
+     * @var bool
+     */
+    private $active;
+
+    ///
+    /// Getters and setters
+    ///
+
+    public function getId () : string {
+        return $this->id;
+    }
+
+    public function setId (string $id) : Site {
+        $this->id = $id;
+
+        if (!$this->hasValidIdentifiant()) {
+            throw new \InvalidArgumentException(
+                "ID must only contain letters, digits and underscore."
+            );
+        }
+
+        return $this;
+    }
+
+    public function getHost () : string {
+        return $this->host;
+    }
+
+    public function setHost (string $host) : Site {
+        $this->host = $host;
+
+        return $this;
+    }
+
+    public function getDatabaseUser () : string {
+        return $this->databaseUser;
+    }
+
+    public function setDatabaseUser (string $databaseUser) : Site {
+        $this->databaseUser = $databaseUser;
+
+        return $this;
+    }
+
+    public function getDatabasePassword () : string {
+        return $this->databasePassword;
+    }
+
+    public function setDatabasePassword (string $databasePassword) : Site {
+        $this->databasePassword = $databasePassword;
+
+        return $this;
+    }
+
+    public function getDatabasePrefix () : string {
+        return $this->databasePrefix;
+    }
+
+    public function setDatabasePrefix (string $databasePrefix) : Site {
+        $this->databasePrefix = $databasePrefix;
+
+        return $this;
+    }
+
+    public function isActive () : bool {
+        return $this->active;
+    }
+
+    public function setActive (bool $active) : Site {
+        $this->active = $active;
+
+        return $this;
+    }
+
+    ///
+    /// Identifiant validation
+    ///
+
+    const VALID_ID_REGEXP = "/^[A-Za-z0-9_]+$/";
+
+    private function hasValidIdentifiant () : bool {
+        return (bool)preg_match(self::VALID_ID_REGEXP, $this->id);
+    }
+
+}
diff --git a/src/SitesRepository/SqliteRepository.php b/src/SitesRepository/SqliteRepository.php
--- a/src/SitesRepository/SqliteRepository.php
+++ b/src/SitesRepository/SqliteRepository.php
@@ -2,6 +2,8 @@
 
 namespace Nasqueron\SAAS\PhpBB\SitesRepository;
 
+use Nasqueron\SAAS\PhpBB\Config\DefaultConfiguration;
+
 use PDO;
 
 class SqliteRepository extends Repository {
@@ -24,8 +26,8 @@
     /// Constructor
     ///
 
-    public function __construct (string $filename) {
-        $this->filename = $filename;
+    public function __construct (string $filename = null) {
+        $this->filename = $filename ?? DefaultConfiguration::getSqliteRepositoryFilename();
     }
 
     ///
@@ -41,6 +43,26 @@
         }
     }
 
+    public function get (string $id) : Site {
+        $statement = $this->getDB()->prepare(
+            "SELECT * FROM sites WHERE id = ?"
+        );
+        $result = $statement->execute([ $id ]);
+        $row = $statement->fetch();
+
+        if ($row === false) {
+            throw new \InvalidArgumentException("Site $id not found.");
+        }
+
+        return (new Site())
+            ->setId($row['id'])
+            ->setHost($row['host'])
+            ->setDatabaseUser($row['db_user'])
+            ->setDatabasePassword($row['db_password'])
+            ->setDatabasePrefix($row['db_prefix'])
+            ->setActive((bool)$row['active']);
+    }
+
     ///
     /// Helper methods
     ///
diff --git a/src/Tasks/BootstrapSqliteRepository.php b/src/Tasks/BootstrapSqliteRepository.php
--- a/src/Tasks/BootstrapSqliteRepository.php
+++ b/src/Tasks/BootstrapSqliteRepository.php
@@ -7,12 +7,12 @@
 class BootstrapSqliteRepository extends Task {
 
     /**
-     * @var string
+     * @var ?string
      */
     private $filename;
 
-    public function __construct (?string $filename = null) {
-        $this->filename = $filename ?? $this->getDefaultFilename();
+    public function __construct (string $filename = null) {
+        $this->filename = $filename;
     }
 
     ///
@@ -35,12 +35,4 @@
 
     }
 
-    ///
-    /// Helper methods
-    ///
-
-    private function getDefaultFilename() : string {
-        return getenv("SAAS_SITES_DB");
-    }
-
 }
diff --git a/src/Tasks/CreateDatabase.php b/src/Tasks/CreateDatabase.php
new file mode 100644
--- /dev/null
+++ b/src/Tasks/CreateDatabase.php
@@ -0,0 +1,84 @@
+<?php
+
+namespace Nasqueron\SAAS\PhpBB\Tasks;
+
+use Nasqueron\SAAS\PhpBB\SitesRepository\Site;
+use Nasqueron\SAAS\PhpBB\SitesRepository\SqliteRepository;
+
+class CreateDatabase extends Task {
+
+    use WithMySQL;
+
+    ///
+    /// Private members
+    ///
+
+    /**
+     * @var string
+     */
+    private $id;
+
+    /**
+     * @var Site
+     */
+    private $site;
+
+    /**
+     * @var \PDO
+     */
+    private $db;
+
+    ///
+    /// Constructor
+    ///
+
+    public function __construct (string $id) {
+        $this->id = $id;
+    }
+
+    ///
+    /// Task methods
+    ///
+
+    public function run () : void {
+        $this->initialize();
+        $this->createDatabase();
+    }
+
+    private function initialize () : void {
+        $this->site = (new SqliteRepository)->get($this->id);
+        $this->db = $this->getMySQLDatabase();
+    }
+
+    private function createDatabase () : void {
+        $this->getMySQLDatabase()
+             ->prepare($this->getQueries())
+             ->execute([
+                 'db' => $this->site->getId(),
+                 'user' => $this->site->getDatabaseUser(),
+                 'pass' => $this->site->getDatabasePassword(),
+             ]);
+    }
+
+    ///
+    /// Helper methods
+    ///
+
+    private function getQueries () : string {
+        $queries = <<<SQL
+CREATE DATABASE IF NOT EXISTS %db%;
+CREATE USER :user@'%' IDENTIFIED BY :pass;
+GRANT ALL ON %db%.* TO :user@'%';
+FLUSH PRIVILEGES;
+SQL;
+
+        return str_replace("%db%", $this->id, $queries);
+    }
+
+    public static function getUsage () : string {
+        return <<<DOC
+%command% <id>: creates a MySQL database for the specified identifant
+DOC;
+    }
+
+}
diff --git a/src/Tasks/WithMySQL.php b/src/Tasks/WithMySQL.php
new file mode 100644
--- /dev/null
+++ b/src/Tasks/WithMySQL.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace Nasqueron\SAAS\PhpBB\Tasks;
+
+use Nasqueron\SAAS\PhpBB\Config\DefaultConfiguration;
+
+use PDO;
+
+trait WithMySQL {
+
+    public function getMySQLDatabase() : PDO {
+        $info = DefaultConfiguration::getMySQLConnectionInformation();
+
+        return new PDO(
+            DefaultConfiguration::getMySQLDatasourceName(),
+            $info['user'],
+            $info['pass'],
+            [ PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION ]
+        );
+    }
+
+}
diff --git a/tests/SitesRepository/SiteTest.php b/tests/SitesRepository/SiteTest.php
new file mode 100644
--- /dev/null
+++ b/tests/SitesRepository/SiteTest.php
@@ -0,0 +1,27 @@
+<?php
+declare(strict_types=1);
+
+namespace Nasqueron\SAAS\PhpBB\Tests\SitesRepository;
+
+use Nasqueron\SAAS\PhpBB\SitesRepository\Site;
+use PHPUnit\Framework\TestCase;
+
+use InvalidArgumentException;
+
+class SiteTest extends TestCase {
+
+    public function testSetId () {
+        $site = new Site;
+        $site->setId('acme');
+
+        $this->assertEquals('acme', $site->getId());
+    }
+
+    public function testSetIdWithInvalidIdentifiant () {
+        $this->expectException(InvalidArgumentException::class);
+
+        $site = new Site;
+        $site->setId('invalid acme');
+    }
+
+}