Getting Last READ/WRITE/SEEK/SCAN date time of each database

--Getting Last READ/WRITE/SEEK/SCAN date time of each database in an SQL instance
SELECT a.database_id, b.name, MAX(a.last_user_seek) last_user_seek, MAX(a.last_user_scan) last_user_scan
,MAX(a.last_user_lookup) last_read, MAX(a.last_user_update) last_write
FROM sys.dm_db_index_usage_stats AS a INNER JOIN
sys.sysdatabases AS b ON a.database_id = b.dbid
GROUP BY a.database_id, b.name