วิธีการ Backup Database Microsoft SQL 2008 R2 Express

@echo off
set bkfolder=Destination Folder
@echo Backup database is working ....
REM ************* Backup database DB 01***************
set dbname=Database Name
for /F "tokens=1,2,3 delims=/ " %%i in ('date/t') do @set d=%%k%%j%%i
for /F "tokens=1,2,3 delims=:. " %%i in ('time/t') do @set t=%%i%%j%%k
sqlcmd -E -S.\MSSQL_SERVER -o"%bkfolder%\%dbname%_%d%%t%.log" -Q"backup database %dbname% to disk='%bkfolder%\%dbname%_%d%%t%.bak' " 

REM ************* Backup database DB 02***************
set dbname=Payroll_V5_log
for /F "tokens=1,2,3 delims=/ " %%i in ('date/t') do @set d=%%k%%j%%i
for /F "tokens=1,2,3 delims=:. " %%i in ('time/t') do @set t=%%i%%j%%k
sqlcmd -E -S.\MSSQL_SERVER -o"%bkfolder%\%dbname%_%d%%t%.log" -Q"backup database %dbname% to disk='%bkfolder%\%dbname%_%d%%t%.bak' " 

REM ************* Delete old files ***************
@echo Deleting files older than 3 days ...
mkdir %bkfolder%\trash
robocopy %bkfolder% %bkfolder%\trash *.* /MOV /MINAGE:90 /NFL /NDL /NJH /NJS
del %bkfolder%\trash\*.* /q
rmdir %bkfolder%\trash