i love logon traces, but for tracking/ accessing specific databases, i don't think it would work;, a logon trigger occurs before a user connects to a database...so in the trigger you wouldn't find a database reference;
you'd want to use a server side trace for DML i htink instead, so you can track/roll up info from the trace results.
--help us help you! If you post a question, make sure you include a CREATE TABLE... statement and INSERT INTO... statement into that table to give the volunteers here representative data. with your description of the problem, we can provide a tested, verifiable solution to your question! asking the question the right way gets you a tested answer the fastest way possible!