After you create an ApsaraDB RDS for MySQL instance, you can create a database on the RDS instance based on your business requirements. ApsaraDB RDS for MySQL allows you to create and delete databases by using the ApsaraDB RDS console, SQL statements, and API operations.
Background information
Terms
instance: a virtualized database server. You can create and manage multiple databases on an RDS instance.
database: a set of data that is stored in an organized manner and can be shared by a number of users. A database provides the minimal redundancy and is independent of applications. In simple words, a database is a data warehouse that is used to store data.
character set: a collection of letters, special characters, and encoding rules that are used in a database.
Maximum number of databases and maximum number of tables
Account type | Maximum number of databases | Maximum number of tables |
Privileged account | In ApsaraDB RDS for MySQL, no limits are imposed on the number of databases that can be created on an RDS instance. Limits may be imposed on the number of directories in underlying file systems. | Less than 200,000 |
Standard account | Less than 200,000 |
Prerequisites
An RDS instance is created. For more information, see Create an ApsaraDB RDS for MySQL instance.
Usage notes
The name of a database on an ApsaraDB RDS for MySQL instance cannot be modified.
Create a database
Use the ApsaraDB RDS console
- Go to the Instances page. In the top navigation bar, select the region in which the RDS instance resides. Then, find the RDS instance and click the ID of the instance.
In the left-side navigation pane of the page that appears, click Databases.
On the page that appears, click Create Database.
In the panel that appears, configure the parameters that are described in the following table.
Parameter
Description
Database Name
The name of the database. It must be 2 to 64 characters in length.
It must start with a letter and end with a letter or digit.
It can contain lowercase letters, digits, underscores (_), and hyphens (-).
The name must be unique within the RDS instance.
NoteIf the database name contains a hyphen (
-), the system parses the hyphen (-) in the name of the folder in which the database resides as@002d.Supported Character Set
The character set of the database. Select a character set based on your business requirements.
Authorized Account
The authorized account of the database. You can leave this parameter empty. If you leave this parameter empty, you can specify the authorized account of the database after the database is created. For more information, see Modify the permissions of a standard account on an ApsaraDB RDS for MySQL instance.
NoteThe Authorized Account drop-down list displays only the standard accounts that are created on your instance. The privileged account has all permissions on all databases and does not require authorization.
Description
The description of the database. This parameter is optional. You can configure this parameter to help you manage the database. The description can be up to 256 characters in length.
Then, click OK.
Use SQL statements
Execute the following statement to create a database:
CREATE DATABASE <database name>;
Delete a database
When you delete a database from an RDS instance by using the ApsaraDB RDS console or an SQL statement, the database becomes unavailable. Proceed with caution.
Use the ApsaraDB RDS console
- Go to the Instances page. In the top navigation bar, select the region in which the RDS instance resides. Then, find the RDS instance and click the ID of the instance.
In the left-side navigation pane of the page that appears, click Databases.
Find the database you want to delete and click Delete in the Actions column.
In the message that appears, click OK.
Use SQL statements
Execute the following statement to delete the database:
DROP DATABASE <database name>;
Related operations
Operation | Description |
Creates a database. | |
Deletes a database. |