Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/INSTALL.mysql.txt

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+
+CREATE THE MySQL DATABASE
+--------------------------
+
+This step is only necessary if you don't already have a database set up (e.g.,
+by your host). In the following examples, 'username' is an example MySQL user
+which has the CREATE and GRANT privileges. Use the appropriate user name for
+your system.
+
+First, you must create a new database for your Drupal site (here, 'databasename'
+is the name of the new database):
+
+  mysqladmin -u username -p create databasename
+
+MySQL will prompt for the 'username' database password and then create the
+initial database files. Next you must log in and set the access database rights:
+
+  mysql -u username -p
+
+Again, you will be asked for the 'username' database password. At the MySQL
+prompt, enter the following command:
+
+  GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, INDEX, ALTER,
+  CREATE TEMPORARY TABLES ON databasename.*
+  TO 'username'@'localhost' IDENTIFIED BY 'password';
+
+where:
+
+ 'databasename' is the name of your database
+ 'username' is the username of your MySQL account
+ 'localhost' is the web server host where Drupal is installed
+ 'password' is the password required for that username
+
+Note: Unless the database user/host combination for your Drupal installation
+has all of the privileges listed above (except possibly CREATE TEMPORARY TABLES,
+which is currently only used by Drupal core automated tests and some
+contributed modules), you will not be able to install or run Drupal.
+
+If successful, MySQL will reply with:
+
+  Query OK, 0 rows affected
+
+If the InnoDB storage engine is available, it will be used for all database
+tables. InnoDB provides features over MyISAM such as transaction support,
+row-level locks, and consistent non-locking reads.