You may use

If Type('DBGetProp("myConnection","CONNECTION","DataSource")') = 'U'
    * does not exist
EndIf

Regards,
Jose

>Is there a best practice for checking if the creation of a connection is successful?
>

>Ex.
>open data myDatabase
>create connection myConnection ;
>  datasource 'myODBCConn' ;
>  userid 'myUserID' ;
>  password 'myPassword'
>