SQL - Last Access date of Databases

To know the last accessed date of Database run the following query

SELECT DatabaseName, MAX(LastAccessDate) LastAccessDate

FROM

    (SELECT

        DB_NAME(database_id) DatabaseName

        , last_user_seek

        , last_user_scan

        , last_user_lookup

        , last_user_update

    FROM sys.dm_db_index_usage_stats) AS PivotTable

UNPIVOT 

    (LastAccessDate FOR last_user_access IN

        (last_user_seek

        , last_user_scan

        , last_user_lookup

        , last_user_update)

    ) AS UnpivotTable

GROUP BY DatabaseName

HAVING DatabaseName NOT IN ('master', 'tempdb', 'model', 'msdb')

ORDER BY 2