It’s a very vast topic and people became very interested to know who has been deleted the database from their working environment , Here I am using an undocumented process to get the information from box very quickly and hope there will be not any incedent to using this command as its only select statement.
SELECT Operation, SUSER_SNAME([Transaction SID]) As UserName, [Transaction Name], [Begin Time], [SPID], Description
FROM fn_dblog (NULL, NULL) WHERE [Transaction Name] = ‘dbdestroy’
will return result as and Username here for further analysis.
WikiDBA 