This parameter must contain the name of the destination CartoDB account. The account name is the same as the username that is used to log into the account on the CartoDB website.
CartoDB accounts are protected by API keys, which can be found in Your API keys in the CartoDB web interface. By default, the API key parameter is left blank.
CartoDB has a SQL API, which allows FME to read and write data to CartoDB tables. This API is normally located at https://[account_name].cartodb.com/api/v2/sql.
However, if you are running your own instance of the open source CartoDB software, this API location may be different. If you are not running your own instance of CartoDB, leave this parameter blank.
https://[account_name].[API_URL_value]
This parameter specifies the number of features to be placed in each transaction before a transaction is committed to the database.
If not specified, the default value is 500.