This tab allows you to limit user resources. Note that this is available as of MySQL 4.0.2 only. If the values in this tab are set to 0, this means that user resources are not limited. Setting them to a non-zero value limits the user resources per hour:
max_questions: Number of queries (commands) the user can send to the server.
max_updates: Number of updates the user can send to the server.
max_connections: Number of connections the user can make to the server.
For more information about limiting user resources, see the Limiting User Resources section.