MSSQL Database Insatance Backup sql part

mssql_db_backup.sql

-- =============================================
-- Author:		Nenad Kostic
-- Create date: 11/29/2012
-- Description:	Backup Instance
-- Big Thanks : Dragan Zdravkovic
-- =============================================

USE MASTER

DECLARE 
	@filepath nvarchar(500)
	,@servername nvarchar(100)
	,@currentdatabasename varchar(100)
	,@databasename as nvarchar (100)
	,@filenamepath as nvarchar (500)
	,@backupname nvarchar (100)

SELECT	@servername =  CAST(SERVERPROPERTY('InstanceName') as nvarchar(128))
SET	@filepath =  'D:MyDBBackups\' + @servername + '\'

DECLARE 
    DATABASENAMES CURSOR
FOR
    SELECT 
        NAME 
    FROM sysdatabases
    WHERE name not in('master', 'tempdb', 'msdb','model')

OPEN DATABASENAMES

FETCH NEXT FROM DATABASENAMES
INTO @currentdatabasename

WHILE (@@FETCH_STATUS <> -1)
BEGIN

	SET @databasename = CAST(Year(getdate()) as nvarchar)
						+ RIGHT('00'+ CAST(MONTH(getdate()) as nvarchar), 2) 
						+ RIGHT('00'+ CAST(DAY(getdate()) as nvarchar),2)
						
	SET @backupname = @currentdatabasename + '-Full Database Backup'
	SET @filenamepath = @filepath + @currentdatabasename   + @databasename + '.bak'
	
	BACKUP DATABASE @currentdatabasename TO  DISK = @filenamepath  WITH FORMAT,
	INIT,  NAME = @backupname, SKIP, NOREWIND, NOUNLOAD,  STATS = 10

    FETCH NEXT FROM DATABASENAMES
    INTO @currentdatabasename

END

CLOSE DATABASENAMES
DEALLOCATE DATABASENAMES

Use mssql_db_backup.bat file to invoke this script.