Working with parameter groups
Database parameters specify how the database is configured. For example, database parameters can specify the amount of resources, such as memory, to allocate to a database.
You manage your database configuration by associating your DB instances and Multi-AZ DB clusters with parameter groups. Amazon RDS defines parameter groups with default settings. You can also define your own parameter groups with customized settings.
Some DB engines offer additional features that you can add to your database as options in an option group. For information about option groups, see Working with option groups.
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