Vertica MC chart understanding
Hi, I am using vertica management console and I would like to know the meaning of the categories in the "User Query Type Distribution" chart. I can see a legend with these categories: DDL, QUERY, SET,TRUNCATE and UTILITY. Can someone tell me which operations typically match each category ? (For example database designer, loading data, deleting data, modifying data, reorganize projections...) While in the "Query Concurrency" chart, I'd like to know why I find a peak every 5 minutes for system queries even if I am not working on the database. Thanks, Pietro.