If you want to trace that who changed the db objects you can find it by using following Sql Server script. Bellow script is given to trace the changes of a procedure myProcName in last 7 days in database myDbName.
--From trace file
--From trace file
DECLARE @filename VARCHAR(255);
SELECT @filename = SUBSTRING(path, 0, LEN(path) - CHARINDEX('\', REVERSE(path)) + 1) + '\Log.trc' FROM sys.traces WHERE is_default = 1;
--From DB
SELECT gt.HostName, gt.ApplicationName, gt.NTUserName, gt.NTDomainName, gt.LoginName, gt.SPID, gt.EventClass, te.name AS EventName, gt.EventSubClass, gt.TextData, gt.StartTime, gt.EndTime, gt.ObjectName, gt.DatabaseName, gt.FileName, gt.IsSystem FROM [fn_trace_gettable](@filename, DEFAULT) gt JOIN sys.trace_events te ON gt.EventClass = te.trace_event_id WHERE EventClass IN ( 164 ) --AND gt.EventSubClass = 2 AND gt.ObjectName LIKE ('%myProcName%') AND DatabaseName = 'myDbName' AND StartTime >= DATEADD(DAY, -7, CONVERT(DATE, GETDATE())) ORDER BY StartTime DESC;